Features: 1. Fully Waterproof: ORP 201H high-accuracy composite laboratory electrode with waterproof design for reliable field and lab use. 2. Accurate and Wide Measurement Range: Measures from –2000 to +2000 mV ORP with ±10 mV accuracy and 1 mV resolution. 3. Durable Construction: Rugged ABS housing, economical and practical for industrial, laboratory, and general-purpose ORP testing. Compatible with standard BNC connectors. 4. Replacement Probe: Designed as a replacement for ORP meters, controllers, or any ORP device with a BNC input. 5. Common Applications: Suitable for water quality testing in hydroponics, aquariums, fish tanks, swimming pools, reservoirs, and laboratories. Specifications: Item Type: ORP Electrode Material: ABS Weight: Approx. 112 g Probe Diameter: 1.2 cm Electrode Length: 14.8 cm ORP Measurement Range: –2000 to +2000 mV Resolution: 1 mV Accuracy: ±10 mV Operating Temperature: 0–50 °C Connection: BNC Applications: Laboratory, domestic water, aquariums, swimming pools Package Includes: 1 × ORP Electrode