Dahua Alarm ARD912-W2 Wireless Water Leak Detector

Wireless water leak detector designed to detect water presence and send alarm notifications to the alarm hub. Features adjustable sensitivity, temperature monitoring, encrypted two-way RF communication, and cloud firmware updates.

Datasheet

---

Key Features

• Water leak detection

• Adjustable sensitivity

• Environment temperature monitoring

• Overheating alarm support

• Two-way encrypted wireless communication

• AES128 encryption

• Frequency hopping technology

• Jamming detection support

• Cloud firmware update with auto recovery

• LED status indicator

• Low battery detection
  

---

Function

• Indicator light: 1 (multiple statuses such as pairing, power status, alarm)

• Button: Power switch

• Remote update: Cloud update

• Low battery detection: Yes

• Tamper: No

---

Detection

• Sensor: Water leak detector

• Sensitivity: Adjustable

---

Electrical

• Power supply: 1 × CR123A battery

• Battery life: Up to 3 years (triggered once per day)

• Operating current: 28.5 μA

• Alarm current: 5.8 mA

• Max power consumption: 144 mW

---

Wireless

• Frequency: 433.1 – 434.6 MHz

• Communication: Two-way

• Communication distance: Up to 800 m (open space)

• Encryption: AES128

• Frequency hopping: Yes

---

Environmental

• Operating temperature: –10°C to +55°C (indoor)

• Operating humidity: 10%–90% RH

• Storage temperature: –10°C to +55°C

• Storage humidity: 10%–90% RH

• Protection rating: IPX5

• Certifications: CE, FCC

---

Physical

• Installation: Plane mount

• Casing material: PC + ABS

• Dimensions: 84.7 × 84.7 × 32.5 mm

• Net weight: 0.1 kg

• Gross weight: 0.2 kg

• Packaging dimensions: 135 × 98 × 56 mm