Finder monitoring relays 71 series finder 714182301021 the programmable universal voltage monitoring relay finder 714182301021 is rated 230v 10a this 1 co spdt relay is for mounting onto 35mm din railand has a acdc voltage detection that is adjustabletypical applications monitoring of over and under voltage or reference voltage with hysteresis 5 50 of the nominal value finder 714182301021 10a programmable universal voltage monitoring relay