Owner`s manual

Page 3
Specifications
RF Frequency: 2.48GHz (Two-way RF)
Effective Range: Typically 50-75 ft, depending on environment
Size: L x D x H = 3.625" x 1.125" x 6.625" (with antenna vertical)
Weight: 3 oz.
Power Supply: 9V DC 300mA
ZR-1N Z REPEATER