Frequency: 340 MHz.
Input voltage: 12VDC with reverse polarity protection.
The output relays are rated at 50A @12VDC.
Operating temperature range: 0o F to 160o F. Receiver dimensions are approximately 5" L x 5" W x 1" H. Transmit range is greater than 100 feet under normal operating conditions. Up to 4 keyfob transmitters can be used with each receiver.