... uses battery as power supply. It is easy for field installation. UIY-6 intelligent pressure gauges are using high accuracy piezoresistive ... sensor is processed and amplified by high accuracy and low temperature coefficient amplifier, and then transferred to A/D switch ... 9999long term stability<0.1%FS/yearbattery power supply9V DCoperating temperature range-20~+70°cselectable rangesMpa, psi,bar, kpa, kg ...