
This sensor is supplied without batteries. There is no way to use it without batteries. There is no indication in the literature that batteries are not included.

π― Honey Refractometer with Automatic Temperature Compensation (ATC) - Tiaoyeer Moisture, Brix, and Baume Refractometer for Honey, 58-90% Brix Scale Range - Honey Moisture Tester
31 Review

Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review

TDS water quality tester - TDS water hardness meter (portable digital salt meter for water analysis)
9 Review

80 Pieces Water Test Litmus Strips Litmus ph Paper Soil Acidity Meter Liquid pH Tester 1-14
10 Review

π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review

π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review

Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review

π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review