`b7 High quality chamber with photoelectric sensor `b7 10 years battery life Detection Performance Detection Method Chamber With Photoelectric Sensor Feature Environment Temperature Indicator Support Signal Strength Indicator Support Self-health Check Support Alarm Sound Interlink Support Interface Power Switch Power Up Enrolling LED Indicator Red (Alarm) Buzzer ≥ 85dB @ 3 m Transmission Transmission Method Two-Way RF Wireless Transmission Frequency 868MHz Transmission Security AES-128 Encryption Transmission Range(Free Space) 1.6Km Enrolling Method Power up;Remote ID;QR Code Electrical Characteristics Standard Battery Life 10 years for standalone sensor 5 years for RF wireless Power Supply Battery Powered Battery Type Non Replaceable Energizer L91 x 2 for Sensor Replaceable CR123A x 1 for RF Wireless Typical Voltage 3V General Operation Temperature -10 `b0C to 50 `b0C (14 `b0F to 122 `b0F) Storage Temperature -20 `b0C to 60 `b0C (-4 `b0F to 140 `b0F) Operation Humidity 5% to 90% Dimension(WxHxD) `f6120 `d7 48mm Weight 190.5g Mounting Method Ceiling Application Scenario Indoor
