Smartware's SMA-49050 Security Sensor with Alarm notifies you of intruders. The alarm is perfect for securing smaller spaces such as your hallway, living room or garage where it detects at 110 / 8 metres. The alarm emits a 100 dB sound if someone enters its detection area. It is easy to switch on and off with the two following remote controls that have a range of up to 60 metres from the alarm. It is easy to install and all necessary batteries are included.InformationMake: SmartwaresType: AlarmModel: SMA-49050Colour: WhiteFrequency: 433 MHzSound: 100 dBRange:110 metres / 8 mBatteries: IncludedContents1 x central unit 1 x sensor 1 x alarm 2 x remote controls batteries & user manual