Mass inertia 'Crowbar' system. Tamper switch normally closed. Built in reed switch
| Make | CQR |
|---|---|
| Manufacturer | CQR Security |
| Model code | SD4 |
| Shock Sensor | Yes |
| Physical Specifications | Dimensions mm: 50 x 28 x 16 |
| Additional info | Mass inertia 'Crowbar' system. Tamper switch normally closed. Built in reed switch |