This is the Konig Wireless alarm system [SEC-ALARM100] Multi functional plug and play wireless alarm system. Easy and quick installation. Secures houses, offices, shops, etc. in just a few minutes. The alarm unit has a 100 dB loud siren and LED indicators which display which sensor is triggered. Complete with 6 wireless door/window sensors for securing doors and windows. Door/window sensors can be switched to RF or RF + alarm. When switched to RF + alarm a 95 dB siren is activated on the sensor. Supplied with 2 RF controlled remote controls to arm or disarm the system. Function switch on alarm unit for alarm or door bell use (chime). Batteries included for the sensors and the remote controls. ...Contact us if you need more help.