Humidity Indicator This LED Temperature and Humidity Indicator using high-performance digital temperature and humidity sensor ,high brightness LED Display, is mainly used in workshops, factories, warehouses, computer rooms, libraries, offices, , laboratories, greenhouses and other environmental for monitoring temperature 2 Input impedance of 620/current, 10 / voltage 3 open circuit response "000" flashes 4 Digital Displays capability: 3 digits 0.0 - 99.9 5 Supply voltage: independent power supply, two-wire transmission, excitation voltage, supply DC 24V100mA 6. Display range: temperature-20 °C -99.9 °C, humidity 7 Accuracy calibration: External Zero Span adjustment 8 Response time: 3 times / second or 0.5 times / sec. a Calibra: oi ac;;.racy: + / - 1 %,+/- ICount 10. Stability: SPAN <+ / - 100ppm/rangeic> Zero <+■/■-0.1 Drawing shows the entire group of TRH-3306D (temperature and humidity display) t TRH-303 (Temperature & Humidity