Cooper-Atkins, SRH77A-E, SRH77A Temperature Tester, digital, temperature range -40° to 300°F / -4° to 150°C, backlight display, sealed keypad, battery eliminator jack, 3-Zone, min/max memory, auto-shut off after 15 minutes of non-use or continuous ON mode, temperature differential between zones 1 & 2, %RH and wet bulb, Constant Scan feature records the min/max temperature from three probes, includes: Model 1075 General Purpose Puncture Probe, Model 4011 Pipe Strap Probe, and Model 5028 Humidity Probe, 9v battery, CE, RoHS, WEEE (Cooper)