The transmitters are well-suited for applications such as wirelessly
monitoring level switches, pump status and system alarms. The devices
can transmit signals from up to three contact switches. The STXW 500
accepts three discrete/digital inputs while the STTW 401 accepts a
thermocouple input and two discrete/digital inputs. Both transmitters
carry intrinsically safe approvals from FM Global and the Canadian
Standards Association for use in hazardous areas. Honeywellwww.honeywell.com/ps973.455.2000