2-Way multiprotocol radio unit, with 8 inputs and 8 outputs (expandable to 32 IN-OUT) and 3 service channels (network, tamper and battery). Log with max 512 events. Back-up connection on PSTN (with IF-TL) and GSM (with BT-GSM). Plastic case with tamper.

| Power supply | 110/230Vac 50Hz / 13,8Vcc, with 4A switching power supply |
| Battery | 12V, 7,5Ah max |
| Power consumption at 230V | 130mA in stand-by (RX mode) 300mA in transmission at max power |
| Power consumption at 12V: | 170mA in stand-by (RX mode) 3,5A in transmission at max power |
| Range frequency | VHF (156÷174MHz) UHF (430÷470MHz) |
| Channel spacing | 12,5KHz |
| Radio deviation | ± 1.65 Khz |
| Check battery | Continuous monitoring voltage |
| Stability in frequency | 2,5ppm –20 ÷ +70°C |
| TX power | 1/5/10W programmable |
| Receiver system | Double conversion superheterodyne |
| Receiver sensitivity | >12dB Sinad –118dBm |
| Communication protocol |
|
| Audio encodings | No. 40 programmable Subtone frequencies CTCSS No. 15 transponder tones |
| Input channels | 8 expandable to 32 Impedance 100KOhm, configurable NC, NO or double-balanced |
| Other inputs | No. 1 enabling input, 100Kohm impedance |
| Outputs | 8, expandable to 32, Open Collector on GND 100mA max., monostables or bistables |
| Other outputs |
|
| Check battery | Continuous monitoring voltage |
| Test dynamic battery | Yes, programmable each 1/5/10/20/30 days |
| Control voltage | Check continuous of voltage |
| Opening the case | Test continuous for opening case |
| Antenna cut |
|
| Interfaces |
|
| PSTN module management | Yes with optional interface |
| GSM module management | Yes, with optional interface |
| LED Signals | Mains, low battery, receiving a valid signal, TX, Rep mode, power |
| Others |
|
| Operating environment temperature | Temperature from -10° to +55° C; Humidity from 20% to 80% |
| Case Protection | IP 30 |
| Dimensions | 31 x 29 x 9,5 cm (without antenna) |
| Weight | 1,45 Kg without battery, 4,25Kg with 7,2Ah battery |
| Optional kits |
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| IRS-8B.V | Power 230Vac, VHF, 10W power, canalization at 12,5KHz, 156÷174MHz Frequency |
| IRS-8B,U | Power 230Vac, UHF, 10W power, canalization at 12,5KHz, 430÷470MHz Frequency |
| ANT-S158 | 5/8 omnidirectional antenna. |
| ANT-S455 | 5/8 omnidirectional antenna. |
| BT-EX8/3 | Expansion module 8 inputs – 8 outputs. |
| IF-TL | Telephone interface card. |
| BT-LTE | GPRS/LTE module. |
| KIT-AG918S | Kit antenna GSM Dualband (900MHz/1800Mhz) |
| IRS-K2 | Anti-robbery kit. |
| BT-KT/2 | Bidirectional 2-channel remote control. |

