Chlorine Testing Device 2-in-1 Water Chlorine Content Measuring Machine Swimming Pool Chlorine Measuring Instrument Water Chlorine PH Tester

Features:
With a probe slot, when not in use, the probe can be inserted into the slot, which is convenient for storage.
Flexible telescopic extension cord can extend the distance, suitable for various envirinmental measurements.
Using 1pcs AA battery, and battery replacement is convenient.
There are 2 different modes for the test machine, and rolling the roller can switch between different modes.
Compact size and light weight for convenient carrying and storage.