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Large, 1-1/8-inch-high digits can be viewed from across the lab. Unique Four-Alert Thermometer provides user with precise monitoring of the slightest change in temperature. Temperature range is –58.0 to 158.0°F or –50.0 to 70.0°C, resolution is 0.1°, and accuracy is ±1°C. Front panel controls are easy to set. Unit displays both probe and ambient temperature. Warns if too hot or cold Alarm will activate at a temperature above a setting, below a setting, between two settings, or outside two settings. Green/red lights blink and an alarm sounds when an out-of-range condition is detected. Continuous alarm sounds every minute for 5 seconds until the temperature returns to a non-alarm condition or until the alarm is turned off. Traceable to NIST for accuracy 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). No-hassle mounting Supplied with self-adhesive wall mount and a flip-open lab bench stand. Sensor dimensions are 0.2-inch diameter by 2/3-inch length. Supplied with an accessory place-anywhere sensor-holding suction cup. Cable length is 3-1/2 feet. ABS plastic shock-resistant and chemical-resistant case is 4 x 4 x 1/2 inches. Weight is 4-1/4 ounces. Replacement battery Cat. No. 1105.