HM Digital Hydromaster 500 - Continuous pH/TDS/EC/Temp meter

HM-500 HydroMaster: EC/TDS, pH, Temp Continuous Monitor
The HM-500 is the most versatile continuous monitor, indicating EC/TDS, pH, and temperature with reliable, steady data that users can rely on. With its rechargeable battery, this item is portable and may be wall mounted. To make it even more user-friendly, it includes a touch screen, high and low alarm set points, and recorded readings. It is great for hydroponics and a variety of other purposes, including laboratories, pools, and aquariums.

Features
Continuous pH, EC, TDS, and temperature monitoring
Rechargeable batteries
RF-resistant Portable/Wall Mount/Benchtop
Data Storage: Up to 20 measurement readings.
Auto shut-off: After 5 minutes.
Alarm: Adjustable. High and Low Set Points, and On/Off
Display: LCD touch-screen with auto backlighting.
Probe: ABS with platinum electrodes for EC/Single Junction pH Sensor with a three-year warranty. 

Specifications
Measurement Scales
pH: pH
Temp: °C, °F
TDS: ppm (0.5 / ppm (0.7) / ppt (0.5) / ppt (0.7)
EC: µS / mS
Range: pH: 0.00 – 14.00 pH
Temperature: 0.0 – 80.0 °C / 32.0 – 176 °F
TDS: 0 – 9999 ppm / 0 – 10.00 ppt
EC: 0 – 9999 µS / 0 – 20.00 mS

Resolution:
pH: 0.1 pH
Temp: 0.1°C / 0.1 °F
TDS: ppm: 0.1ppm (0 – 99.9ppm) / 1 ppm (100-999ppm) / 10ppm (1000-9990 ppm) ppt: 0.01 ppt (0.01 – 10.00 ppt)
EC: µS: 0.1 µS (0 – 99.9 µS) / 1 uS (100 – 999 µS) / 10µS (1000-9990 µS) mS: 0.01 mS (0.01 – 20.00 mS)
ATC: Yes
Accuracy: pH: ± 0.1 pH
Temp: ± 1 °C / °F
TDS: ± 2 %
EC: ± 2 %
Power Source: AC 110 V – 220V / Rechargeable Lithium Ion Battery
Function Environment: 0 – 50°C (0-122°C) / RH 80 % (EC Probe: 0 – 80°C)
Sensor Cable: 24-inch shielded Coaxial Cable
Dimensions: About 8 x 4 x 1.5 inches
Weight: 15.2 ounces for body / 5 ounces for two probes (without case)