The SHT40 is the 4th generation digital temperature and humidity sensor from Sensirion. In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40 offers consistent high accuracy within the measuring range. The SHT40 sensor covers a humidity measurement range of 0 to 100%RH and a temperature detection range of -40°C to 125°C with a typical accuracy of ±1.8％RH and ±0.2℃. The internal variable power heater enables the device to work properly under extreme operating conditions like condensing environments. The board can accept a voltage of 3.3V to 5V and a current consumption below 0.15mA in low power mode. This low current requirement makes the SHT40 suitable for mobile or wireless battery-driven applications. It's ideal for urban environment monitoring, intelligent buildings, industrial automation, smart home and other Internet of Things applications. Features * High Accuracy * Low Power Consumption * Small Size * Fast Response Connection Example (Arduino) Specification * Operating Voltage: 3.3V-5V * Operating Current: 0.45mA * Communication Interface: I2C * Response Time: 8s (tau63%) * Humidity Measurement Range: 0~100%RH * Humidity Measurement Accuracy: ±1.8% * Temperature Measurement Range: -40~+125℃ (-40 to +275℉) * Temperature Measurement Accuracy: ±0.2℃ * Dimension: 14x17mm/0.55x0.67" * Mounting Hole Size: M2 (2mm) * Mounting Hole Pitch: 10mm Package Contents * 1x Fermion: SHT40 humidity & temperature sensor Resources * Product wiki * Schematics https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2023-03-07 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2023-12-27 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2024-09-19 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2024-11-29 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2024-11-30 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2025-02-13 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2025-04-10 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2025-08-05 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2025-11-28 https://elecena.pl/product/22725489/fermion-sht40-humidity-temperature-sensor-breakout 2025-11-29