A wireless alarm with PIR motion sensor and key pad. Enables you to choose a four digit security code and detects motion up to 7m/23ft away. Wall mounted or free standing. Required 4x 1. 5V AA batteries. Not included. Detects motion up to 7m, 23ft. 130dB alarm. Battery operated. Requires 4x 1. 5v AA batteries, not included. Always read instructions.