TM803 Thermometer Digital Temperature Meter with Alarm Function for Aquarium Refrigerator

Features 1. To meet different needs, it is suitable for medicine cabinets, aquariums, and refrigeration industries. 2. Light in weight and compact in structure, quick installation, no complicated procedures. 3. The external sensor has a long cable to meet the requirements of long‑distance measurement. 4. The thermometer has good characteristics, high stability, and accurate test results. 5. With high temperature and low temperature limit setting alarm, Celsius and Fahrenheit conversion function. Specification Item Type: ThermometerModel: TM803Material: ABSPower Supply: 1 x AAA1.5V (battery not included)Application: Temperature Test Basic Skills Range Accuracy Internal Temperature -10℃~50℃ ±1℃ 14℉~122℉ ±1.8℉ Outside Temperature -50℃~70℃ ±1℃ -58℉~158℉ ±1.8℉ Special Function TM803 Maximum Value / Minimum Value √ High Temperature and Low Temperature Upper and Lower Limit Setting Alarm √ Celsius/Fahrenheit Switching √ Sampling Rate 1 time/10s Long-Distance Measurement The external sensor cable is 3 meters long Screen Size Approx. 47x20mm / 1.9x0.8in Power Supply 1.5V (AAA) (not included) How to Use ALARMSET High and low temperature alarm setting key: 1. The alarm default value is ‑1℃ for high temperature (HIGH) and 4℃ for low temperature (LOW) each time a new battery is installed. Press the ALARMSET key for more than 2 seconds, the screen will show HIGH OUT high temperature setting (‑1.0℃). Press the ℃ / ℉ key number to increase the cycle by one degree every time until it reaches the high temperature value you need to set. 2. After setting the high point temperature, press the [ALARMSET] key again, the bottom point temperature of LOW OUT appears on the screen. To set (4℃), press the ℃ / ℉ key, and the number will decrease by one degree each time you press it until it drops to the low temperature value you need to set. 3. Press the ALARMSET key for the last time to complete the setting. Package List 1 x Thermometer (Battery Not Included)1 x Suction Cup1 x Manual 1 x Double-Sided Sticker