Features and Specifications: 32 Transmitter capacity. RF activity indicator. Quick-learn programming. Form “C” relay contact. Specifications: Operating frequency: 315 MHz. Data format: DX format. Number of codes: 1,048,575. Channels: One channel. Measured range: 700 feet in one quadrant with DXT-21 transmitter; 500 Feet in open air (four quadrant test). Operating Temperature: 32 degrees to 140 degrees F (0 degrees to 60 degrees C). Sensitivity: -95 dBm (typical). Number of stored transmitter codes: 32 per receiver. Receiver output: For “C” relay contact, 1 amp, at 32 Volts DC per channel. Field selectable receiver output modes: Momentary, four seconds (factory set); Momentary, one second Flip-flop toggle latch. 2-Channel mode button (one per channel). Learn mode: Press and release to enter learn mod. Transmitters Learned: Press and hold for five seconds after the last LED flash to delete all transmitters on an associated channel. Erase Memory: Press and hold for five seconds after the last LED flash to delete all transmitters on an associated channel. Clear latch: Press and release. Clear low battery: Press and release mode switch on channel 2 (DXR-702 only).