Dahua DHI-ARM310-W2 Wireless Input Expander

The Dahua DHI-ARM310-W2 Wireless Input Expander is a device designed to integrate wired sensors into a wireless alarm system. It supports multiple alarm types including intrusion, medical, fire, gas, and tamper alarms. The expander offers a wide communication range of up to 1,000 meters in open spaces, ensuring stable transmission using two-way communication and frequency hopping technologies. It is equipped with features like signal strength detection, low battery alarms, and temperature monitoring. The expander operates on a CR123A battery, offering a battery life of up to four years depending on the setup, and it is configured through the DMSS app for iOS and Android​. Dimension Application Technical Specifications Port Indicator Light 1 × green alarm indicator Button 1 × power button Protection Zone 1-channel dry contact input Function Tampering Alarm Yes Remote Upgrade Cloud update Low Battery Alarm Yes Test Mode Yes Search Signal strength detection Wireless Carrier Frequency 433.1 MHz–434.6 MHz Communication Distance Up to 1,000 m (3,280.84 ft) in an open space Communication Mechanism Two-way Frequency Hopping Yes Encryption Mode AES128 General Power Supply Mode CR123A battery Power Consumption Max. 70 mW Operating Temperature –10 °C to 55 °C ( 14 °F to 131 °F) (indoor) Operating Humidity 10%–90% (RH) Dimensions 100.2mm × 20.8mm × 20.3mm (3.94″ × 0.82″ ×0.80″) Package Dimensions 135.0 mm × 98.5 mm × 27.8mm (5.31″ × 3.88″ × 1.09″) Installation Mode Bracket mount Net Weight 70 g (0.15 lb) Gross Weight 115 g (0.25 lb) Certification CE Battery Life 4 years (The external input type is NO) 2 years (The external input type is NC or Pulse) Casing Material PC ABS Temperature Measurement Range –15 °C to 65 °C ( 5 °F to 149 °F) (indoor) Measurement Precision ±1 °C (±1.8 °F) Resolution 1 °C (33.8 °F) SKU: DHI-​ARM‌310-​W2 Categories: Dahua, Dahua Airshield Wireless Alarms Tags: dahua input expander, DHI-ARM310-W2, input expander, Wireless Input Expander