HM Digital Replacement TDS/EC Sensor for HM-200 Meter - Measures EC, TDS & Temperature

Restore Reliable Nutrient Readings - HM-200 Replacement Probe

When a probe drifts or fails, every nutrient adjustment becomes a guess. This replacement sensor fits the HM-200 meter, so you can bring back dependable readings without replacing the whole unit. It measures electrical conductivity (EC), total dissolved solids (TDS) and temperature, and its heat-resistant ABS probe body is built for repeated use in solution.

Sold as a single sensor, it suits any HM-200 owner, from a home gardener with one reservoir to a commercial grower who keeps a spare on hand so monitoring never stops during vegetative growth or flowering.

Key Features & Benefits

• EC and TDS measurement — tracks nutrient strength in your solution with the two readings most hydroponic growers rely on.
• Temperature measurement — shows solution temperature alongside conductivity readings.
• Heat-resistant ABS probe — gives a durable body for regular use.
• Long cable — the 2 m (78.7 in) lead reaches into reservoirs without moving the meter.
• Made for the HM-200 — replaces the original sensor directly.

Who Should Use HM Digital Replacement TDS/EC Sensor

Use this sensor if you own an HM-200 meter and your readings have become unreliable or inconsistent. It also suits growers who want a spare probe ready for hydroponic systems running continuously.

About HM Digital Replacement TDS/EC Sensor

HM Digital makes water-quality meters for hydroponic and indoor cultivation. This replacement sensor, product code HM-SP-C2, is designed for the HM-200 meter. It measures conductivity, TDS and temperature, has a heat-resistant ABS probe and a 2 m cable.

Frequently Asked Questions

Q: Which meter does this sensor fit?
A: It is a replacement sensor for the HM Digital HM-200 meter. Do not assume it fits other models.

Q: What does it measure?
A: It measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. These readings help you manage nutrient strength in your reservoir.

Q: When should I replace my probe?
A: Replace it when performance declines or readings become unreliable, for example if they drift or will not settle. Check calibration first to rule out a simple calibration issue.

Q: What is the difference between EC and TDS?
A: EC measures how well a solution conducts electricity, which reflects dissolved nutrient salts. TDS is an estimate of the total dissolved solids, usually calculated from the EC reading.

Q: How long is the cable?
A: The cable is 2 m (78.7 in), which gives you room to place the probe in a reservoir while keeping the meter within reach.

Q: Is this sold as a single unit?
A: Yes. One order contains one replacement sensor.