• 【Dual Parameter Detection】Simultaneously measures residual chlorine (0-4.00 ppm) and water temperature (0-60°C) with high precision for comprehensive water quality analysis.

• 【Sensitive Detachable Electrode】Features a removable plug-in electrode probe design with rapid response and accurate, stable detection values for reliable measurements.

• 【Backlit LCD Display】Dual-line large character display with clear readings, switchable temperature units (°C/°F), and backlight for easy viewing in low-light conditions.

• 【Smart Auto Power-Off】Automatically shuts down after 5 minutes of inactivity to effectively extend battery life and reduce power consumption.

• 【Multi-Scene Application】Suitable for swimming pools, drinking water, aquariums, industrial water quality testing, wastewater treatment, and hydroponics applications.

Specifications:

• Model: CL-M21
• Chlorine Measurement Range: 0-4.00 ppm
• Temperature Range: 0-60℃ / 32-140℉
• Chlorine Accuracy: ±0.01 ppm
• Battery: 4 x 1.5V (LR44)
• Working Temperature: 0-60℃
• Material: ABS
• Dimensions: 184 x 44 x 45 mm
• Net Weight: 93±5g
• Auto Shut-off: 5 minutes
• Display: Backlit LCD
• Electrode Type: Detachable High Sensitivity Probe