Minimum Order Quantity (MOQ) : 10 piecesFor inquiries and orders, message us via our chatbot Features: Wide measuring range Dual display with ATC IP65 Waterproof membrane keypad Auto power off and Non-Sleep mode disable User friendly easy to operate with One touch calibration Hold function Pentype and easy to carry Low battery indicator Switchable temperature unit °C/°F Multi point calibration Auto ranging function Specifications: Measurement Range Salinity: 0~9999ppm or 10.0~100.0ppt or 0.0%~10.0% or 0.950~1.080(S.G) based on NaCl TDS: 0~9999ppm or 10.0~160.0*f ppt (f is TDS factor) Temperature: -5~60.0°C (23~140°F) Accuracy Salinity & TDS: ±1%F.S ±1 digit Temperature: +/-0.5°C Resolution Salinity: 1ppm or 0.1 ppt or 0.1% or 0.001(S.G) TDS: 1ppm or 0.1ppt Temperature: 0.1 TDS Factor: 0.3~1.00 Built-in NaCl conductivity to TDS conversion factor Temp. coefficient: Built-in NaCl Temp. Coefficient. LCD Size: 30(H) x 18(W)mm Battery: 4 x LR44 button battery Dimension: approx. 165(L)x35(W)x32(H)mm Weight: approx. 115g. Set comes with: 1 x Salinity / TDS Meter 4 x LR44 button battery English Instruction Manual Standard Factory Packaging