Electronic time relay "Interval-M".

Time relays, timersThe electronic time relay "Interval-M" has been produced since 1987. The relay uses a non-contact switching device, which provides the relay with high stability and reliability in operation; there is also a five-stage switching of the lamp power up to 500 W. Exposure range: 0.1 ... 111 seconds. The authorship of the photographs has been lost.