TDS Mini Controller, range: 0 to 999mg/L (ppm), dosing relay: contact closed whe
| TDS Mini Controller, range: 0 to 999mg/L (ppm), dosing relay: contact closed when reading exceeds setpoint value, 12VDC |
| TDS Mini Controller, range: 0 to 999mg/L (ppm), dosing relay: contact closed when reading exceeds setpoint value, 12VDC |