• Operating Voltage: DC9V battery
• Static Current: less than 10uA
• Alarm Current: less than 20mA
• Alarm Indication: Red LED flash
• Sound Level: More than 85dB/m
• Operating Temperature: -10°C ~+50°C
• Operating Humidity: less than 95% RH
• Detecting Area: 20 square meter
• Wireless frequency:433mhz or 315mhz, default 433mhz, please inform us if you need 315mhz
• Timing resistor: 1.5M/3.3M/4.7M optional, default:4.7M
• Radio Distance: 100m(in open area)
• Dimension:107mm dia. * 37mm