DELAVAN MICROWAVE 320

These controls are non-contact sensing microwave based controls. The transmitter ( source) consists basically of a power supply, pulse modulator, Gunn oscillator, and directional antenna. The receiver consists of a directional antenna, a microwave mixer cavity with a Schottky barrier diode detector, a high gain, low noise amplifier, a pulse coding network, a voltage comparator circuit and a relay driver circuit.