Description
Dahua ARM310-W2 Wireless Input Expander
The Dahua ARM310-W2 is a wireless input expander designed to bring third-party wired sensors or dry-contact devices into a compatible Dahua wireless alarm system.
It is a practical solution when you want to reuse an existing contact device, add a wired trigger point, or expand your alarm setup without running cable back to the hub.
This compact module supports one dry contact input, two-way wireless communication, AES128 encryption, frequency hopping, low battery alarm and cloud updates.
It also supports six alarm types including intrusion, medical, fire, emergency, gas and tamper.
Key Features
- Wireless input expander for Dahua alarm systems
- 1-channel dry contact input
- Supports NO and NC alarm inputs
- Six supported alarm types
- Two-way wireless communication
- Up to 1000 m transmission range in open space
- AES128 encrypted communication
- Frequency hopping for stable performance
- Low battery alarm and signal strength detection
- Cloud update with automatic recovery from update failure
- Built-in temperature monitoring
What Does This Input Expander Do?
The ARM310-W2 lets you connect an external dry-contact device to your Dahua wireless alarm system.
This is useful when you want to integrate a compatible wired contact, switch or trigger into a wireless setup.
It can help installers modernise older alarm points, expand detection options, or connect specialised external inputs without replacing the whole system.
Why Choose the ARM310-W2?
-
Easy alarm expansion: add a wired trigger into a Dahua wireless system
-
Flexible input support: works with NO and NC alarm inputs
-
Reliable wireless: two-way communication with frequency hopping
-
Secure transmission: AES128 encryption helps protect alarm signals
-
Compact install: small bracket-mount design for neat installation
Specifications
| Model |
ARM310-W2 |
| Product Type |
Wireless Input Expander |
| Protection Zone |
1-channel dry contact input |
| Supported Input Types |
NO and NC |
| Alarm Types |
Intrusion, medical, fire, emergency, gas and tamper |
| Indicator Light |
1 × green alarm indicator |
| Button |
1 × power button |
| Tamper Alarm |
Yes |
| Signal Strength Detection |
Yes |
| Low Battery Alarm |
Yes |
| Remote Upgrade |
Cloud update |
| Carrier Frequency |
433.1 MHz–434.6 MHz |
| Communication Distance |
Up to 1000 m in open space |
| Communication Mechanism |
Two-way |
| Frequency Hopping |
Yes |
| Encryption |
AES128 |
| Power Supply |
CR123A battery |
| Battery Life |
Up to 4 years (NO), up to 2 years (NC or Pulse) |
| Operating Temperature |
-10°C to +55°C |
| Dimensions |
100.2 × 20.8 × 20.3 mm |
| Installation |
Bracket mount |
Frequently Asked Questions
What is the Dahua ARM310-W2 used for?
It is a wireless input expander used to connect a dry-contact input device to a Dahua wireless alarm system.
How many inputs does it support?
It supports 1-channel dry contact input.
Does it work with NO and NC inputs?
Yes, both NO and NC alarm inputs are supported.
What alarm types does it support?
It supports intrusion, medical, fire, emergency, gas and tamper alarm types.
How far can it communicate?
Dahua rates it for up to 1000 metres in open space.
Is communication secure?
Yes, it uses AES128 encryption and frequency hopping.
Does it include battery and signal monitoring?
Yes, it supports low battery alarm and signal strength detection.
Can it be updated remotely?
Yes, it supports cloud update and automatic recovery from update failure.
More Information
Related Products
Tip: Use the ARM310-W2 when you want to bring a compatible wired contact or trigger into your Dahua wireless alarm system without extra cabling back to the hub.
