Click to expand Tap to zoom HM Digital Replacement Platinum Sensor for COM-100 by One Stop Hydro Save $-36.95 $36.95 | / SKU HMDSPC1 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. This spare sensor is for HM Digital EC/TDS/Temp Combo Meter model COM-100. Features platinum TDS/EC sensor and thermister. Shipping Weight 0.16 lbs. Package Dimensions 3.75L x 2.25W x 2.25H