Dahua · DHI-ARM310-W2 · Wireless Input Expander · Dry ContactInput ExpanderDahua DHI-ARM310-W2 Wireless Input Expander
The Dahua DHI-ARM310-W2 is a wireless input expander that brings a third-party wired sensor or dry-contact device into a compatible Dahua wireless alarm system — ideal for reusing an existing contact, adding a wired trigger point, or expanding the system without cabling back to the hub. It offers a 1-channel dry contact (NO/NC), supports six alarm types, reaches up to 1000m, and uses AES128-encrypted two-way RF.
Specifications — DHI-ARM310-W2
| Model |
DHI-ARM310-W2 |
| Type |
Wireless Input Expander |
| Protection Zone |
1-channel dry contact input |
| Supported Input Types |
NO and NC |
| Alarm Types |
Intrusion, medical, fire, emergency, gas, tamper |
| Indicators |
1 × green alarm LED, 1 × power button |
| Tamper / Low-Battery Alarm |
Yes |
| Signal Strength Detection |
Yes |
| Carrier Frequency |
433.1MHz – 434.6MHz |
| Communication Distance |
Up to 1000m in open space |
| Communication |
Two-way RF, frequency hopping |
| Encryption |
AES128 |
| Power Supply |
CR123A battery |
| Battery Life |
Up to 4 years (NO), up to 2 years (NC / Pulse) |
| Operating Temperature |
-10°C to +55°C |
| Dimensions |
100.2 × 20.8 × 20.3 mm |
| Installation |
Bracket mount |
| Warranty (Australia) |
3 years · CCTV Guru Australia |
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