Extech SL124

The Extech SL123 remote Alarm Relay Module provides a means to interface the Extech SL130G Sound Level Monitor or the RH520A Humidity-Temperature Recorder to an external device to indicate when an over limit condition occurs. It includes a 3 A DC solid state relay, 3 m (9 ft) alarm relay trigger cable, nickel-plated screws, and saddle clamps.