CarpSpirit Blax VX-R Alarm & Receiver The wireless model in the BLAX alarm series. The VX-R model is manufactured using the same highly impact-resistant design as the entry-level version and offers all the standard features plus the added benefit of wireless functionality and a receiver. Features include highly visible LEDs (3 or 4 colours), 4 volume settings, 4 tone settings, 4 sensitivity levels, 20-second LED glow, night light mode, low battery warning, 2.5 mm power output, 150 m range, stainless steel thread, high impact ABS moulded construction. Available as a set of 4 or 3 (including protective cover). The bite alarms require 1x 9 V block battery each and the receiver requires 3x AAA batteries (please order separately).