Registreeru, et avada oma eksklusiivsed B2B hinnad ja alustada ostlemist. Registreeru kohe!

Siemens Andurid - Lk 28

Safety position switch locking force 2600 N, 5 directions of approach, 3X
Ainult telli
Siemens
Safety position switch locking force 2600 N, 5 directions of approach, 3X
183,30 €
Hind kehtib kuni 24.12.25
EAN: 4011209683136
MPN: 3SE5312-2SD12
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Safety position switch locking force 2600 N, 5 directions of approach, 3X
Ainult telli
Siemens
Safety position switch locking force 2600 N, 5 directions of approach, 3X
256,83 €
Hind kehtib kuni 24.12.25
EAN: 4011209683259
MPN: 3SE5312-2SJ12
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Safety position switch locking force 2600 N, 5 directions of approach, 3X
Ainult telli
Siemens
Safety position switch locking force 2600 N, 5 directions of approach, 3X
235,19 €
Hind kehtib kuni 24.12.25
EAN: 4011209683167
MPN: 3SE5312-2SG12
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Safety position switch locking force 2600 N, 5 directions of approach, 3X
Ainult telli
Siemens
Safety position switch locking force 2600 N, 5 directions of approach, 3X
214,16 €
Hind kehtib kuni 24.12.25
EAN: 4011209683204
MPN: 3SE5312-3SF13
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Siemens
Ainult telli
Siemens
ECOFAST sealing plugs
6,96 €
Hind kehtib kuni 28.02.26
EAN: 4011209625112
MPN: 3RK1911-5BA50
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Label set for multi-function device, 2 CO label set (1 unit) with 16 functions
Ainult telli
Siemens
Label set for multi-function device, 2 CO label set (1 unit) with 16 functions
3,90 €
Hind kehtib kuni 31.12.25
Vahesumma: 19,50 € MOQ: 5
EAN: 4011209953840
MPN: 3RP2901-0B
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 12d
Signal converter 24 V AC/DC, 3-way on: 0-10 V off: 0-20 mA
Ainult telli
Siemens
Signal converter 24 V AC/DC, 3-way on: 0-10 V off: 0-20 mA
76,80 €
Hind kehtib kuni 24.12.25
EAN: 4047621001180
MPN: 3RS7000-2CE00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Signal converter 24 V AC/DC, 3-way on: 0-10 V off: 4-20 mA
Ainult telli
Siemens
Signal converter 24 V AC/DC, 3-way on: 0-10 V off: 4-20 mA
76,80 €
Hind kehtib kuni 24.12.25
EAN: 4047621001197
MPN: 3RS7000-2DE00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Signal converter 24 V AC/DC, 3-way on: 4-20 mA off: 0-10 V
Ainult telli
Siemens
Signal converter 24 V AC/DC, 3-way on: 4-20 mA off: 0-10 V
76,80 €
Hind kehtib kuni 24.12.25
EAN: 4047621001234
MPN: 3RS7003-2AE00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Signal converter 24 V AC/DC, 3-way on: 0-10 V off: 0-20 mA
Ainult telli
Siemens
Signal converter 24 V AC/DC, 3-way on: 0-10 V off: 0-20 mA
76,80 €
Hind kehtib kuni 24.12.25
EAN: 4047621001005
MPN: 3RS7000-1CE00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Signal converter 24 V AC/DC, 3-way on: 0-10 V, 0/4-20 mA off: 0-10 V, 0/4-20 mA
Ainult telli
Siemens
Signal converter 24 V AC/DC, 3-way on: 0-10 V, 0/4-20 mA off: 0-10 V, 0/4-20 mA
100,49 €
Hind kehtib kuni 24.12.25
EAN: 4047621001265
MPN: 3RS7005-2FE00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Braking system TRI sheet metal, for MV440 mounting plate and VS100 sensor heads
Ainult telli
Siemens
Braking system TRI sheet metal, for MV440 mounting plate and VS100 sensor heads
266,36 €
Hind kehtib kuni 31.12.25
EAN: 4019169142397
MPN: 6GF9002-7AD
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 1-4 weeks
Transponder RF330T button, RF300, 32K byte FRAM, IP68
Ainult telli
Siemens
Transponder RF330T button, RF300, 32K byte FRAM, IP68
100,22 €
Hind kehtib kuni 28.02.26
Vahesumma: 1 002,20 € MOQ: 10
EAN: 4034106024765
MPN: 6GT2800-5BA00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RF300 reader RF310R (GEN2), RS422 (3964R), IP67, -25 to +70 °C
Ainult telli
Siemens
SIMATIC RF300 reader RF310R (GEN2), RS422 (3964R), IP67, -25 to +70 °C
637,66 €
Hind kehtib kuni 28.02.26
EAN: 4047622444771
MPN: 6GT2801-1BA20-0AX1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RF300 reader RF350R (GEN2), RS422 (3964R), IP65, -25 to +70 °C
Ainult telli
Siemens
SIMATIC RF300 reader RF350R (GEN2), RS422 (3964R), IP65, -25 to +70 °C
601,53 €
Hind kehtib kuni 28.02.26
EAN: 4047622417966
MPN: 6GT2801-4BA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RF600 reader RF610R CMIIT, Ethernet, PROFINET M12, IP67, -25 to +55 °C
Ainult telli
Siemens
SIMATIC RF600 reader RF610R CMIIT, Ethernet, PROFINET M12, IP67, -25 to +55 °C
1 514,45 €
Hind kehtib kuni 28.02.26
EAN: 4047622678039
MPN: 6GT2811-6BC10-2AA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RF200 reader RF250R, IO-Link V1.1, IP65, -25 to +70 °C
Ainult telli
Siemens
SIMATIC RF200 reader RF250R, IO-Link V1.1, IP65, -25 to +70 °C
438,93 €
Hind kehtib kuni 28.02.26
EAN: 4047618080150
MPN: 6GT2821-5BC32
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
MOBY D/RF300 ISO quick change holder, A-thread, for MDS D139/MDS D339
Ainult telli
Siemens
MOBY D/RF300 ISO quick change holder, A-thread, for MDS D139/MDS D339
26,79 €
Hind kehtib kuni 28.02.26
Vahesumma: 267,90 € MOQ: 10
EAN: 4042948557006
MPN: 6GT2690-0AH00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS transponder RTLS4030T, UWB/Phase, ISED
Ainult telli
Siemens
SIMATIC RTLS transponder RTLS4030T, UWB/Phase, ISED
145,13 €
Hind kehtib kuni 28.02.26
EAN: 4047622956748
MPN: 6GT2700-3DA33
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS transponder RTLS4030T,...
Ainult telli
Siemens
SIMATIC RTLS transponder RTLS4030T,...
145,13 €
Hind kehtib kuni 28.02.26
EAN: 4047623799108
MPN: 6GT2700-3DA03
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS Transponder RTLS4060T,...
Ainult telli
Siemens
SIMATIC RTLS Transponder RTLS4060T,...
417,92 €
Hind kehtib kuni 28.02.26
EAN: 4047623799559
MPN: 6GT2700-6DE13
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS transponder RTLS4083T,...
Ainult telli
Siemens
SIMATIC RTLS transponder RTLS4083T,...
226,38 €
Hind kehtib kuni 28.02.26
Vahesumma: 1 131,90 € MOQ: 5
EAN: 4047622854525
MPN: 6GT2700-5DC23
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS Gateway RTLS4430G, chi...
Ainult telli Tootmisest väljas
Siemens
SIMATIC RTLS Gateway RTLS4430G, chi...
1 652,47 €
Hind kehtib kuni 24.12.25
EAN: 4047623799580
MPN: 6GT2701-5CB03
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS accessory holder for R...
Ainult telli
Siemens
SIMATIC RTLS accessory holder for R...
30,07 €
Hind kehtib kuni 28.02.26
Vahesumma: 150,35 € MOQ: 5
EAN: 4047623799207
MPN: 6GT2790-0BE30
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS accessory Clip bracket...
Ainult telli
Siemens
SIMATIC RTLS accessory Clip bracket...
11,03 €
Hind kehtib kuni 28.02.26
Vahesumma: 110,30 € MOQ: 10
EAN: 4047623799627
MPN: 6GT2790-0DE00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC MV530 SR optical reader, resolution: 800 x 600 pixels, for 1D/2D codes
Ainult telli
Siemens
SIMATIC MV530 SR optical reader, resolution: 800 x 600 pixels, for 1D/2D codes
3 218,57 €
Hind kehtib kuni 31.12.25
EAN: 4047622961056
MPN: 6GF3530-0CD10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 3d
SIMATIC RF1000R starter package 1x ...
Ainult telli
Siemens
SIMATIC RF1000R starter package 1x ...
795,02 €
Hind kehtib kuni 31.12.25
EAN: 4034106026684
MPN: 6GT2096-1BB00-0AA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 1-4 weeks
Transponder RF680T heat resistant, ISO 18000-6C, EPC Class 1 GEN 2
Ainult telli
Siemens
Transponder RF680T heat resistant, ISO 18000-6C, EPC Class 1 GEN 2
88,56 €
Hind kehtib kuni 24.12.26
Vahesumma: 885,60 € MOQ: 10
EAN: 4034106026905
MPN: 6GT2810-2HG81
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
UHF module RF660H CMIIT
Ainult telli
Siemens
UHF module RF660H CMIIT
883,17 €
Hind kehtib kuni 28.02.26
EAN: 4034106026783
MPN: 6GT2813-1FA20
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
UHF module RF660H FCC
Ainult telli
Siemens
UHF module RF660H FCC
883,17 €
Hind kehtib kuni 28.02.26
EAN: 4034106026776
MPN: 6GT2813-1FA10
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Transponder RF680T heat resistant, ISO 18000-6C, EPC Class 1 GEN 2
Ainult telli
Siemens
Transponder RF680T heat resistant, ISO 18000-6C, EPC Class 1 GEN 2
124,05 €
Hind kehtib kuni 24.12.26
Vahesumma: 1 240,50 € MOQ: 10
EAN: 4034106026929
MPN: 6GT2810-3HG00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
UHF module RF660H ETSI
Ainult telli
Siemens
UHF module RF660H ETSI
883,17 €
Hind kehtib kuni 28.02.26
EAN: 4034106026769
MPN: 6GT2813-1FA00
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC IDENT CB 4H Gate for Tire. ...
Ainult telli
Siemens
SIMATIC IDENT CB 4H Gate for Tire. ...
21 172,69 €
Hind kehtib kuni 28.02.26
EAN: 4034106027124
MPN: 6GT2881-1AB04-0AB0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Safety position switch, separate actuator, metal encl. 40 mm, 5-pole
Ainult telli
Siemens
Safety position switch, separate actuator, metal encl. 40 mm, 5-pole
72,93 €
Hind kehtib kuni 24.12.25
EAN: 4047621092751
MPN: 3SE5114-0QV10-1AJ4
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Position switch, metal encl. EN50047, 31 mm device connection
Ainult telli
Siemens
Position switch, metal encl. EN50047, 31 mm device connection
27,57 €
Hind kehtib kuni 24.12.25
EAN: 4011209862739
MPN: 3SE5214-0KC05-1AE1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Basic switch with corrosion protection for position switch 3SE513 plastic
Ainult telli
Siemens
Basic switch with corrosion protection for position switch 3SE513 plastic
15,59 €
Hind kehtib kuni 24.12.25
EAN: 4011209866713
MPN: 3SE5132-0BA00-1CA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
LED cover for position switch 50 mm LEDs 110-230 V AC yellow/green, yellow
Ainult telli
Siemens
LED cover for position switch 50 mm LEDs 110-230 V AC yellow/green, yellow
13,68 €
Hind kehtib kuni 24.12.25
EAN: 4011209722873
MPN: 3SE5240-3AA00-1AG0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Cable gland for position switch, M20x1.5 for cables 5-13 mm, 1200 units
Ainult telli
Siemens
Cable gland for position switch, M20x1.5 for cables 5-13 mm, 1200 units
3,86 €
Hind kehtib kuni 28.02.26
Vahesumma: 4 632,00 € MOQ: 1200
EAN: 4047621055213
MPN: 3SX5691-2A
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 8-10 weeks
Safety position switch locking force 2600 N, 5 directions of approach, 3X
Ainult telli
Siemens
Safety position switch locking force 2600 N, 5 directions of approach, 3X
205,21 €
Hind kehtib kuni 24.12.25
EAN: 4011209683198
MPN: 3SE5312-3SE13
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Safety switch, plastic, open-circuit principle, actuator monitoring, 24 V
Ainult telli
Siemens
Safety switch, plastic, open-circuit principle, actuator monitoring, 24 V
529,86 €
Hind kehtib kuni 31.12.25
EAN: 4047621095448
MPN: 3SE6415-1AB01
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 7d
To enable the Bluetooth function with RF1040R and RF1070R
Ainult telli
Siemens
To enable the Bluetooth function with RF1040R and RF1070R
53,15 €
Hind kehtib kuni 28.02.26
Vahesumma: 265,75 € MOQ: 5
EAN: 4034106027155
MPN: 6GT2300-0CC00-0AX2
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS transponder RTLS4030T EX1, UWB, phase
Ainult telli
Siemens
SIMATIC RTLS transponder RTLS4030T EX1, UWB, phase
1 149,28 €
Hind kehtib kuni 28.02.26
EAN: 4047623799719
MPN: 6GT2700-3DA03-0EX1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS transponder RTLS5201T,...
Ainult telli
Siemens
SIMATIC RTLS transponder RTLS5201T,...
127,71 €
Hind kehtib kuni 28.02.26
EAN: 4047623089605
MPN: 6GT2752-0TS01
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC RTLS accessory power clip h...
Ainult telli
Siemens
SIMATIC RTLS accessory power clip h...
104,49 €
Hind kehtib kuni 28.02.26
EAN: 4047623799702
MPN: 6GT2790-0DE40
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC IDENT CB 4H Gate FCC RFID U...
Ainult telli
Siemens
SIMATIC IDENT CB 4H Gate FCC RFID U...
20 570,81 €
Hind kehtib kuni 28.02.26
EAN: 4034106027322
MPN: 6GT2881-1AB04-1AA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC IDENT CB 4H Gate FCC for Ti...
Ainult telli
Siemens
SIMATIC IDENT CB 4H Gate FCC for Ti...
21 172,69 €
Hind kehtib kuni 28.02.26
EAN: 4034106027339
MPN: 6GT2881-1AB04-1AB0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SIMATIC IDENT CB 4H Gate CMIIT RFID...
Ainult telli
Siemens
SIMATIC IDENT CB 4H Gate CMIIT RFID...
20 570,81 €
Hind kehtib kuni 28.02.26
EAN: 4034106027353
MPN: 6GT2881-1AB04-2AA0
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Transponder RF620T
Ainult telli
Siemens
Transponder RF620T
7,00 €
Hind kehtib kuni 24.12.26
Vahesumma: 140,00 € MOQ: 20
EAN: 4034106026882
MPN: 6GT2810-3HC80
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
Transponder RF621T
Ainult telli
Siemens
Transponder RF621T
7,72 €
Hind kehtib kuni 24.12.26
Vahesumma: 77,20 € MOQ: 10
EAN: 4034106026899
MPN: 6GT2810-1HC80
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
set of cables for main circuit for ...
Ainult telli
Siemens
set of cables for main circuit for ...
99,78 €
Hind kehtib kuni 24.12.25
EAN: 4011209057142
MPN: 3TX7680-1B
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
base plate for mounting combination...
Ainult telli
Siemens
base plate for mounting combination...
160,60 €
Hind kehtib kuni 24.12.25
EAN: 4011209057166
MPN: 3TX7681-1B
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
132,78 €
Hind kehtib kuni 28.02.26
EAN: 4047623604846
MPN: 7MF1565-3BE10-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
160,31 €
Hind kehtib kuni 28.02.26
EAN: 4047623604822
MPN: 7MF1565-3BE01-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
160,31 €
Hind kehtib kuni 28.02.26
EAN: 4047623604921
MPN: 7MF1565-5BA01-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
160,31 €
Hind kehtib kuni 28.02.26
EAN: 4047623604976
MPN: 7MF1565-5BE01-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P200 Transmitters for pressure and absolute pressure for general applications Non-linearity: 0,25 percent (typically)
136,22 €
Hind kehtib kuni 28.02.26
EAN: 4047623605034
MPN: 7MF1565-5CA10-1AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
326,09 €
Hind kehtib kuni 28.02.26
EAN: 4047623605058
MPN: 7MF1566-3AA00-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
356,36 €
Hind kehtib kuni 28.02.26
EAN: 4047623605126
MPN: 7MF1566-3AC01-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
329,52 €
Hind kehtib kuni 28.02.26
EAN: 4047623605133
MPN: 7MF1566-3AC10-1AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
Ainult telli
Siemens
SITRANS P210 Transmitters for pressure and absolute pressure for low-pressure applications Non-linearity: 0,25 percent (typically)
326,09 €
Hind kehtib kuni 28.02.26
EAN: 4047623605140
MPN: 7MF1566-3AC10-2AA1
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 4-6 weeks