Triple display constantly shows minimum/maximum, and current temperatures. Instantly view if freezer, water bath, or incubator is within temperature spec. Monitor temperature of any experiment when you’re not there-overnight, weekends. Range is – 50 to 70 degree C. Resolution is 1 degree and accuracy is +/-1 degree C. Sensor and 10-foot cable may be placed under water, in refrigerator, or freezer. Small cable diameter (1/16″) allows refrigerator doors to close on it with no effect. Unplugging the cable activates a sensor inside the unit for monitoring ambient room temperature. Simple, one-button operation resets the minimum/maximum memories. Probe’s wire-mounting bracket permits easy sensor placement. Low battery is signaled on the display. To assure accuracy an individually serial-numbered Traceable certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Unit’s high-impact ABS plastic case has a flip-open stand, wall hanging hook, magnet and Velcro mounting tape. Measures 2.5″ width by 2-5/8″ height by 0.75″ thick and weight is 1-7/8 ounces. Unit runs continuously for 1 year on the supplied battery.