Single Button Transmitter, Product Type Transmitter, Includes Battery, Visor Clip, For Use With GTO Gate Operators, Color Black, Standards FCC Regulations, Compatible with Grainger Part Number 13X156, 13X157, 13X161, 13X162, 29RV46, 36A982, 36A983, 36A984, 36A985, Compatible with Manufacturer Model Number GPX-SL25, PRO-SW2000XLS, Number of Buttons 1