A 2pc alarm and transmitter wireless bite alarm set with up to 200m range displayed on a double blister. 
 2 alarms
4 screw in snag bars (2 short and 2 long)
Wireless range of up to 200m
Vibrating receiver
 Variable tone
Variable volume
 Rolling Code System (prevents interference between sets)
Waterproof
Transmitter requires - 4 x AAA batteries (not included)
Alarms require - LRV08 batteries (not included)