The TPI 343 flow and return kit is a water resistant differential temperature indicator suitable for use with a wide range of type K thermocouple probes. Dual thermocouple inputs make this instrument ideal for applications including flow and return temperature measurements and radiator output checks. Features of the TPI 343 KIT 1 Dual type K thermocouple inputs Displays: T1, T2 or T1-T2 Temperature range: -50°C to + 1350°C Switchable between °C and °F Resolution: 0.1°C up to 999.9°C and 1°C above 1,000°C Basic accuracy: ±0.3% FSD Records and displays minimum & maximum temperatures Data hold facility Battery life: 200 hours Auto power off Open probe indication Water resistant The TPI 343 KIT 1 is supplied with: Two heavy duty pipe clamp probes Two open wire thermocouples Protective rubber boot Canvas pouch Convenient zip-up wallet Battery - Long life PP3 Don’t forget once you have purchased and received your TPI 343, leave a "Customer Review" and share your thoughts with others.