"Product Description Easy to carry around on a keychain or in your pocket or purse, the RE2300 helps you quickly arm or disarm your alarm system, and comes with an SOS panic button. RE2300 remote control is dainty and delicate, easy to carry. It can be attached to your key ring, or just put into your pockets or purses. When you are about to exit or enter the house, you can use it to arm or disarm the system. In case of emergency, press the [SOS] button, the alarm will be active immediately. Easy to carry on a keychain or in your pocket or purse Comes with an SOS panic button Power Supply: DC 3V (CR2032 button cell battery x1) Transmitting Distance:<80 m (open area/no interference) Transmit Current: = 9.5 mA Specifications: Power Supply: DC 3V (CR2032 button cell battery x1) Alarm Current: <9.5 mA Transmitting Distance: <80m (open area/no interference) Radio Frequency: 868MHz Housing Material: PC + ABS plastic Operating conditions: Temperature -10°C – +55°C Humidity <80% (non-condensing) Dimensions (L x W x H): 71 x 38 x 12 mm