A temperature meter is an instrument used to measure the temperature of beings or things. ... The most widely recognized temperature meter is a mercury thermometer used to measure the temperature of people. These thermometers consist of a graduated glass capillary with a pool of mercury in one end. Features: LED display measured temperature, clear, intuitive, not affected by light The embedded panel, 220VAC direct power supply, easy installation Measuring temperature range, high precision Specification: Place of Origin: Guangdong, China Brand Name: Elitech Model Number: TPM-900 Usage: Household Theory: Frequency Accuracy: 1C Temperature range : -30℃~+110℃ Power supply voltage: 220VAC ± 10% Power supply: <3W Temperature measurement display range: -30 ℃ ~ + 110 ℃ Sensor: NTC Panel size: 31 x 64 (mm) Hole size: 25.7 * 58.4 (mm) Uses HVAC system temperature monitoring Refrigeration and cold storage checking Industrial equipment temperature testing Food storage and processing control Outdoor and field temperature measurement Package Includes: 1 x TPM-900 Waterproof Installation Temperature Meter Elitech