Key Features
- SOS emergency alarm.
- Frequency hopping function and two-way communication technology ensure communication stability.
- Cloud update and automatic recovery from update failure.
System Overview
An all-new industrial design and advanced technological system make the new generation of wireless alarm products easier to install, look better, communicate more reliably, and perform more stably. From the comfort of the mobile apps DMSS (for end users) and COS Pro (for installers), receive notifications in real-time, control and manage your devices, perform remote operations, and more.
Application Scene
Mainly applied for villas, shops, apartments, etc.
Technical Specifications
Input/Output
- Indicator Light
- 1 x two-color status indicator (green: normal, red: abnormal)
- Button
- 4 (Home, Away, Disarm, and SOS)
Function
- Remote Upgrade
- Cloud update
- Low Battery Alarm
- Yes
- Search
- Signal strength detection
Wireless
- Carrier Frequency
- 433.1 MHz–434.6 MHz
- Transmitter Power (EIRP)
- Limit 10 mW
- Communication Distance
- Up to 500 m (1,640.42 ft) in an open space
- Communication Mechanism
- Two-way
- Encryption Mode
- AES128
Frequency Hopping
Yes
General
- Power Supply
- CR2032 battery
- Power Consumption
- Max. 85 mW
- Operating Temperature
- -10 °C to +55 °C (+14 °F to +131 °F) (indoor)
- Operating Humidity
- 10%–90% (RH)
- Product Dimensions
- 60.0 mm x 39.5 mm x 15.0 mm (2.36" x 1.56" x 0.59") (L x W x H)
- Packaging Dimensions
- 135.0 mm x 98.5 mm x 27.8 mm (5.31" x 3.88" x 1.09") (L x W x H)
- Net Weight
- 20 g (0.04 lb)
- Gross Weight
- 65 g (0.14 lb)
- Certifications
- CE
- Casing
- PC + ABS
- Battery Life
- 3 years
Ordering Information
| Type | Model | Description |
|---|---|---|
| Wireless keyfob | DHI-ARA24-W2 | Wireless keyfob |
Dimensions
Diagram showing dimensions of the DHI-ARA24-W2 Wireless Keyfob. The main body is shown from top, side, and front views. Dimensions are provided in millimeters and inches: 40.0 mm [1.58 inches] for the width, 60.0 mm [2.36 inches] for the length, and 14.9 mm [0.59 inches] for the depth. A circular base is also depicted.
Application Diagram
Application diagram illustrating the wireless alarm system connectivity. An 'Alarm Hub' is shown at the center, connected via Wi-Fi and RF433. The Alarm Hub connects to the internet/cloud, which then communicates with the DMSS mobile app. The system supports communication via GPRS/4G. Devices shown connecting to the system include a Wireless Door Detector, Wireless PIR Detector, Wireless Keyfob, and Wireless Siren. The DMSS app can receive messages and initiate calls.
