



⚡ Measure Like a Pro, Anywhere, Anytime!
The Extech RE300 ExStik ORP Meter delivers precise oxidation-reduction potential readings from -999 to 999mV with 1mV resolution and ±0.5% accuracy. Featuring automatic self-calibration, data hold, and memory for 15 readings, it’s designed for professionals needing reliable, waterproof (IP57) performance in the field or lab. The package includes all essential accessories for immediate use, backed by a one-year warranty.
| Manufacturer | Extech |
| Part Number | RE300 |
| Item Weight | 4.2 ounces |
| Product Dimensions | 0.75 x 0.75 x 200.1 inches |
| Item model number | RE300 |
| Batteries | 4 Lithium Metal batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Style | RE300 |
| Power Source | Battery Powered |
| Voltage | 3 Volts |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Measurement Accuracy | +/-0.5% |
| Mounting Type | Surface Mount |
| Included Components | RE305 flat surface ORP electrode, cap, cup, batteries, neck strap |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | NiMH |
| Description Pile | 4 × CR2032 (3V) batteries |
| Warranty Description | Full one year warranty on parts and workmanship, unless otherwise specified. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. |
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