Reliable Bite alarm with illuminated Snag Ears. Sensitivity, volume and pitch adjustable in 8 steps. With mute and night light function and 2.5 mm connection socket. Receiver with anti-theft device. Bivvy light brightness adjustable in 4 steps. Range: approx. 150 m. All sets including receiver and Bivvy Light. Bite alarm, receiver and Bivvy Light each require 3 x AAA batteries (not included).