Below are the available bulk discount rates for each individual item when you purchase a certain amount
Announce visitors, warn against burglars, set boundaries, etc. Audible (85dB) and visible (LED) alert. Range: 1 to 4m (3.3ft to 13ft). Not for outdoor use. Includes 9V battery holder, on/off switch adapter jack, schematics, receiver, transmitter, and slalom timing system. Requires a 9V battery.