Major Tech MT91 Mini Bluetooth Hygrometer





Dual Line 4 Digit LCD Display
Measure ambient Temperature and Humidity
Data hold function
Min/Max reading
Bluetooth BLE
Auto power off

$137.50 inc. GST

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Major Tech MT91 Mini Bluetooth Hygrometer

SKU MT91 Category


The MT91 mini hygrometer measures relative humidity, temperature, and dew point while the modern ergonomic design with large backlit dual display makes it easy to use in any application. Relative humidity is normally expressed as a percentage, a higher percentage means the air-water is more humid. At 100% humidity, the air is saturated and at dew point. The Bluetooth connectivity allows users to transfer and share measured data to a smart phone and the app is available on both Android and IOS platforms. Other features include Min/Max record more and data hold.


Major Tech

Major Tech (Pty) Ltd was established in 1992, with a vision and mission of being the brand of choice, by consistently pushing the benchmark with innovative, high quality product developments, providing unparalleled service excellence and exceeding all expectations. The founder of Major Tech, comes with a vast knowledge and over 30 years of hands-on experience in the electrical industry and is the driving force behind the vision of the company. Being a values-based organisation, every decision and undertaking is underpinned by their core values.

Major Tech

Additional information

Weight 0.6 g
Dimensions 30 × 20 × 10 mm


Function Range Resolution Accuracy
Temperature 0°C – 50°C 0.1°C ±(1.0°C)
Relative Humidity 10 – 90%RH 0.01RH ±(5% RH)
Digital Display LCD Dual display
Min Max Yes
Overrange Indication Yes
Enclosure Moulded
Low Battery Indication Yes
Battery 9V
Weight 74g
Dimensions 108 x 60 x 15mm
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