Programmable M12 RTD temperature transmitters from Omega Engineering have an M12 connection, 4-20 mA output and a temperature range of -58 to 248 degrees F (Tmax) and 176 degrees (electronic). The transmitter has a stainless-steel body, 0.12-inch diameter and probe lengths of 0.51 and 0.94 inches. 800/826-6342; www.omega.com.