Product image. Check the selected model, lens, colour and package contents before ordering.

Dahua · Alarms

Dahua DHI-ARM310-W2 Wireless Input Expander

Model / SKU: DHI-ARM310-W2

Dahua DHI-ARM310-W2 Wireless Input Expander. The Dahua DHI-ARM310-W2 Wireless Input Expander is a versatile device designed to integrate with security systems by converting wired detector inputs into wireless signals. It supports six types of alarms, including intrusion, medical, fire, emergency, gas, and tamper alerts, making it suitable for various security needs. The expander operates using two-way communication technology and frequency hopping to ensure stable and reliable signal transmission. Additionally, it offers features such as signal strength detection, temperature monitoring, and a low battery alarm. With a communication range of up to 1,000 meters in open space, it provides significant coverage. Users can manage and configure the device through the DMSS app, available on both iOS and Android platforms. The device is powered by a CR123A battery, with a battery life ranging from two to four years depending on the alarm input configuration. Key Features Six types of alarms: intrusion, medical, fire, emergency, gas, and tamper NC and NO available for alarm inputs (NO by default) Signal strength detection Low battery alarm Temperature monitoring Frequency hopping function and two-way communication technology ensure communication stability Cloud update and automatic recovery from update failure DHI-ARM310-W2 Datasheet 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)