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DP-413 Decibel Meter 13 inches Sound Decibel Meter, Wall Hanging and Desktop Sound Level Meter Large LED Noise Meter Displays Decibel Time Temperature Humidity with Buzzer & Icons Alarm for Classroom Studio

$ 56.99
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DP-352 Temperature and Humidity Data Logger Digital Temperature Data Logger with Remote Sensor Large LCD Thermometer with Alarm&Record Function for Refrigerator, Cold Storage

$ 0.00
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DP-336 Decibel Meter Wall Hanging Sound Level Meter 11 inch Large LED Display Noise Temperature Humidity Meter with Alarm Icons Indicator Wide Applications for Classroom, Studio, Home, Factory

$ 49.99
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