ASB Trade › Alarm systems
Alarm systems
Also searched as: wireless alarm system, motion detector, panic button, Dahua alarm
Dahua wireless intruder alarm on the 868 MHz band: ARD2231-W2 dual-technology PIR + microwave motion detectors with a 12 m range, ARD2251E-W2 outdoor detectors with 15 m range and anti-masking, ARD912-W2 water leak detectors on a CR123A battery, HY-SA21A-W2 photoelectric smoke detectors with an 85–90 dB sounder, ARD821-W2 and ARD822-W2 panic buttons with one and two keys in IP54 housings, the ARA43-W2 repeater for 128 devices and up to 1,600 m, the ARM320-W2 input expander, the ARM9A4-W2 multi-IO transmitter with 16 inputs and 4 relays, the ARM7022-W2 dual-channel relay rated 2×10 A and ARA34A brackets for ARD1731 series detectors. 16 items priced from 14 to 420 GEL.
16 items · Dahua
- Dahua ARA33A detector bracket for ARD1233/ARD2231 series, wall/ceiling · 13,54 ₾/pcs
- Dahua ARA34A detector bracket for ARD1731 series, wall/ceiling · 13,54 ₾/pcs
- Dahua ARA34E bracket for ARD2251E outdoor detector, aluminium, ±40° · 33,85 ₾/pcs
- Dahua ARA43-W2(868) wireless alarm repeater, 128 devices, 1,600 m · 243,75 ₾/pcs
- Dahua ARD2231-W2(868) wireless dual-tech motion detector, PIR + microwave, 12 m · 176,04 ₾/pcs
- Dahua ARD2251E-W2(868) wireless outdoor motion detector, PIR + microwave, 15 m, anti-masking · 406,26 ₾/pcs
- Dahua ARD821-W2(868) wireless panic button, 1 button, IP54 · 54,17 ₾/pcs
- Dahua ARD822-W2(868) wireless panic button, 2 buttons, IP54 · 54,17 ₾/pcs
- Dahua ARD912-W2(868) wireless water leak detector, 868 MHz, CR123A · 101,56 ₾/pcs
- Dahua ARD912-W2(868D) wireless water leak detector, 868 MHz, 1,200 m · 108,33 ₾/pcs
- Dahua ARM310-W2(868) wireless input expander, 1 NC/NO zone, 868 MHz · 67,71 ₾/pcs
- Dahua ARM320-W2(868) wireless input expander, 2 inputs, external power, 1,600 m · 81,25 ₾/pcs
- Dahua ARM7022-W2(868) wireless dual-channel relay, 2×10 A, 100–240 V AC · 117,19 ₾/pcs
- Dahua ARM9A4-W2(868) wireless multi-IO transmitter, 16 inputs + 4 relays, 868 MHz · 419,80 ₾/pcs
- Dahua HY-GC21B-W2(868) wireless carbon monoxide alarm, LCD, 85 dB · 135,42 ₾/pcs
- Dahua HY-SA21A-W2(868) wireless smoke alarm, photoelectric, 85–90 dB · 121,88 ₾/pcs
Every W2(868) device works with a Dahua wireless hub on the same band, so a system is built around the hub: for an apartment, motion detectors in the rooms, smoke and leak detectors in the kitchen and bathroom, a panic button by the door. Dual PIR + microwave technology cuts false alarms from draughts and heat, and anti-masking is needed outdoors where a detector could be covered. On a large site or with thick walls the range is extended with a repeater. The multi-IO transmitter and input expander connect old wired detectors to the hub, and the ARM7022 relay switches lighting or a lock on an alarm. Equipment is sold by the piece or as kits at wholesale prices with next-day delivery in Tbilisi.
Frequently asked questions
What does W2(868) in a detector name mean?
W2 is the second generation of Dahua wireless devices, and 868 is the operating frequency in MHz used for alarm systems in Europe and Georgia. Such a detector works only with an 868 MHz Dahua hub, not with 433 MHz.
Why is a PIR + microwave detector better than a plain PIR?
It alarms only when both channels see movement at the same time, so false alarms from heaters, draughts and sunlight are far fewer. Such a detector can be placed near windows and air conditioners.
How far from the hub can a detector be?
Up to 1,200–1,600 m in open air depending on the model, and much less inside a building because of walls and floors. If the signal is weak, an ARA43-W2 repeater is placed between them — it serves up to 128 devices.