WAHL INSTRUMENTS' DSX500 Transmitter Thermometers are digital RTD thermometers that feature a wide range (-328° to 1,472°F), high accuracy (±0.3°F), and are designed for many applications where accurate and reliable temperature monitoring and transmitting are critical. Offered in two different series, the DST500, which includes a field replaceable batter with a 2-year operational life, and the DSX500, loop-powered from an integral, 4-20 mA transmitter for reliable data transmission. Both are factory configurable to specifications and user-configurable with an optional DSTPROG software kit.