| Work voltage: | (18V audio )+(12V network) |
| Power consumed: | Static state: <20mA Work:<600mA |
| Horizontal resolution: | 350 CCIR Line |
| Ringing time : | 30s |
| Holding time: | 120s |
| Installation size: | 60*60mm |
| Material of frame: | Aluminum alloy |
| Capacity | At most 1000PCS |
| Dimension | 215×360×75mm |