| Item condition | New | 
| Manufacture name | Monitoring relay 22.5mm wide, Single phase over or under voltage 20 to K8AK0020H | 
| Brand | Omron | 
| Categories | Monitoring Relays | 
| Country of origin | NL | 
| Harmonized System Code | 9031 9000 00 | 
| Single-phase under voltage possible | Yes | 
| Single-phase hysteresis possible | Yes | 
| Three-phase hysteresis possible | No | 
| Type of voltage measuring range | AC/DC | 
| Type of electric connection | Screw connection | 
| Voltage measuring range 1 | 20-600 V | 
| Min. adjustable delay-on energization time | 0.1 s | 
| Number of contacts as normally open contact | 0 | 
| Packing level 1 | 4548583402416, 4548583402416 | 
| Width | 22.5 mm | 
| Height | 90 mm | 
| Depth | 100 mm | 
| With detachable clamps | No | 
| Three-phase under voltage possible | No | 
| Single-phase over voltage possible | Yes | 
| Three-phase over voltage possible | No | 
| Contains function DC-under voltage | Yes | 
| Contains function DC-over voltage | Yes | 
| Contains function DC-voltage hysteresis | Yes | 
| Max. permitted delay-on energization time | 30 s | 
| Max. permitted off-delay time | 30 s | 
| Min. adjustable off-delay time | 0.1 s | 
| Response value voltage | 20-600 V | 
| Voltage type for actuating | AC | 
| Number of contacts as normally closed contact | 0 | 
| Number of contacts as change-over contact | 2 |