Dwyer 490W-6-HKIT is a wireless hydronic differential pressure manometer with a temperature range of 32 to 140°F (0 to 60°C). It has an accuracy of 2% of reading, ±0.5 psi and requires 2x AAA batteries (each sensor). The manometer has a resolution of 0.0001 psi and is compatible with gases and liquids. It has a maximum pressure of 400 psi and can wirelessly transmit data up to 65´ (19.8 m). It is compatible with UHH6 and newer devices, as well as Bluetooth® v5.0 and Bluetooth® LE wireless technology. The manometer supports Android® firmware version 8.0 and above and has a pressure range of 0 to 200 psi (0 to 1379 kPa).