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Simultaneously displays high/low and current temperature Triple display constantly shows high, low, 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 –58 to 158°F or –50 to 70°C. Resolution is 1° and accuracy is ±1°C. Micro cable Sensor and 10-foot cable may be placed under water, in refrigerator, or freezer. Small cable diameter (1/16-inch) allows refrigerator doors to close on it with no effect. Unplugging the cable activates a sensor inside the unit for monitoring ambient room temperature. One-button operation is a snap Simple, one-button operation resets the high/low 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. Size is 2-5/8 x 2-1/2 x 3/4 inches and weight is 1-7/8 ounces. Unit runs continuously for 1 year on the supplied battery. Replacement battery Cat. No. 1039.