Dahua ARA12-W2(868) Wireless Siren

Dahua ARA12-W2(868) Wireless Siren Wireless siren 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. Specifications: Indicator Light: 1 × green alarm indicator Button: 1 × power button Tamper Alarm: Yes Remote Upgrade: Cloud update Test Mode: Yes Low Battery Alarm: Yes Search: Signal strength detection Carrier Frequency: 868.0 MHz–868.6 MHz Transmitter Power (EIRP): Limit 25 mW 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 Power Supply: 2 × CR123A batteries Power Consumption: Max. 240 mW Operating Temperature: –10 °C to +55 °C (indoor) Operating Humidity: 10%–90% (RH). Product Dimensions: 81.0 mm × 81.0 mm × 26.0 mm Installation: Bracket mount Gross Weight: 175 g Certifications: CE EN 50131-1:2006+A1:2009+A2:2017+A3:2020 EN 50131-4:2019 EN 50131-6:2017 EN 50131-5-3:2017 Security Grade 2 Environmental Class II Battery Life: 2.5 years in working status (triggered twice every week and alerts 120 s for each triggering) Sound Pressure: Volume high 84 db (A )1 m Volume medium 78 db (A)1 m Casing: PC + ABS Measuring Range: –15 °C to +65 °C (indoor) Measuring Precision: ± 1 °C Resolution: 1 °C Volume Adjustment: 3 volumn levels