Specifications
Technical specification
| Specifications | |
| External AC power supply voltage | Input 110 ~ 240VAC, output DC 15V / 4A |
| Host built-in rechargeable battery (optional) | 12V / 7Ah |
| Low battery voltage | ≤ 11V |
| Backup battery duration | About 24 hours (when only one keyboard is connected) |
| Alarm dialing mode | Internet alarm, telephone alarm and GSM alarm |
| DTMF dial frequency deviation | < 1.5% |
| Communication protocol of central monitoring server | ADMCO Contact ID, SIA-2013 |
| Modulation mode | ASK / FSK (optional) |
| Wireless receiving and transmitting frequency | 433MHz / 868MHz (optional) |
| Recording time | 15 seconds |
| Wireless receiving range | Open space (100-150m) |
| Working temperature range | 0°C to 45°C (32°F to 120°F) |
| Storage temperature range | -20°C to 60°C (-4°F to 140°) |
| Humidity | 85% relative humidity at 30°C (86°F) |

