NGT VS 3pc Wireless Alarms Adjustable Volume  and Tone Control With Receiver. This set is supplied in a modern,  lightweight storage/ presentation box. Features include : 

: 3 Alarms with red, green, and blue led's

: 6 Screw-In snag bars ( 3 short and 3 long )

: Wireless range up to 200m

: Variable Tone

: Variable Volume

: Rolling code System ( Preventing interference between sets )

: Waterproof

Dispatched 2nd Class