The SenTech Defender 8.2 / 9.5 MHz RF system package is designed for easy Plug-n-Play installation. It includes both the transmitter and receiver pedestals, a non-slip aluminum mounting plate, power supply for 120 VAC operation and all necessary hardware for assembly. Assembles in minutes following easy step by step instructions. The system covers a 6 foot aisle. Works with both labels and hard tags. System package includes the following items: 2) STC625 Receiver Pedestals 1) STC626 Transmitter Pedestal 1) STC8200-P Power Supply 120V /18 VAC 1) STC702 Universal 6’ X 16” wide Base plate 1) System Manual & User guide