Description
The Mastercool 52234-BT Digital Thermometer & Hygrometer combines precise environmental sensing with modern Bluetooth connectivity, giving HVAC and refrigeration professionals the ability to monitor dry bulb temperature, wet bulb temperature, and relative humidity in real time. Built for convenience, the unit clips easily to vents, louvers, registers, or ductwork to capture accurate readings in the field or shop.
Featuring wireless Bluetooth® 4.2/5 support and a high-performance ceramic antenna, the 52234-BT transmits data up to 260 ft line-of-sight to the Mastercool Connect app. Technicians can view conditions remotely, compare temperatures, and confirm system performance without staying physically attached to the instrument.
Capable of measuring conditions from -4°F to 150°F (-20°C to 65°C) for both dry and wet bulb temperatures and tracking relative humidity from 1% to 99%, this digital device suits a wide range of HVAC and environmental verification tasks. Accurate performance and lightweight construction make it an essential tool for professionals who demand remote data and hands-free monitoring.
Key Features
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Digital thermometer and hygrometer in one compact tool
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Measures dry and wet bulb temperature from -4°F to 150°F (-20°C to 65°C)
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Relative humidity range 1% to 99%
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Bluetooth® wireless technology with up to 260 ft (80 m) range
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Works with Mastercool Connect app for remote monitoring
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Convenient clip-on design for vents, registers, and ductwork
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Lightweight and portable for field service use
Applications
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HVAC system diagnostics and commissioning
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Refrigeration temperature and humidity monitoring
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Remote environmental sensing in vehicles and equipment
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Weather and comfort level checks in buildings
Specifications
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Manufacturer: Mastercool
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Part Number: 52234-BT
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Device Type: Digital thermometer & hygrometer
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Dry Bulb Temp Range: -4°F to 150°F (-20°C to 65°C)
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Wet Bulb Temp Range: -4°F to 150°F (-20°C to 65°C)
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Relative Humidity Range: 1% to 99%
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Bluetooth Range: Up to 260 ft (80 m)
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Bluetooth Version: 4.2 / 5 compatible
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Battery: One CR2032 cell
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Battery Life: ~40 hours continuous use (shelf life ~8 months)
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Dimensions: 2.2 x 2.1 x 1.7 in
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Weight: ~1.2 oz
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Clip: Integrated clip for easy mounting
Compatibility
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Mastercool Connect Bluetooth® app
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HVAC & refrigeration systems
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Environmental and comfort monitoring
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Professional technician field diagnostics









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