The associated "pistol grip" transmitter is approximately 11.5" high x 7.5" wide x 3" deep. It uses 8 AA-size batteries. It has a Trim control for adjusting the Pull Rod extension. The Alkaline transmitter batteries will typically last over one year.
The Receiver Unit will operate for 60-80 hours on a set of non-rechargeable Alkaline batteries (rechargeable batteries can also be used, and recharged between trapping sessions. Sanyo ENELOOP NiMH batteries are recommended).