--- product_id: 206620113 title: "HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead" brand: "hiletgo" price: "S/.83" currency: PEN in_stock: true reviews_count: 2 url: https://www.desertcart.pe/products/206620113-hiletgo-rs485-sht20-temperature-humidity-sensor-module-high-precision-temperature store_origin: PE region: Peru --- # Lightning-protected RS485 interface ±3% RH accurate humidity probe ±0.3°C high precision temperature sensor HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead **Brand:** hiletgo **Price:** S/.83 **Availability:** ✅ In Stock ## Summary > 🌟 Elevate your environment monitoring game with precision and protection! ## Quick Answers - **What is this?** HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead by hiletgo - **How much does it cost?** S/.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/206620113-hiletgo-rs485-sht20-temperature-humidity-sensor-module-high-precision-temperature) ## Best For - hiletgo enthusiasts ## Why This Product - Trusted hiletgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Wide Operating Range:** Operates flawlessly from -20°C to 60°C and 0-80% RH for versatile environments. - • **Low Power Consumption:** Efficient 0.3W max power keeps your system lean and green. - • **Robust RS485 Interface:** Seamlessly integrates with Modbus protocol and features lightning protection for durability. - • **Industrial-Grade Precision:** Experience ultra-reliable temperature & humidity readings with SHT20 sensor tech. - • **Customizable Device Address:** Set device ID from 1 to 255 for scalable multi-sensor networks. ## Overview The HiLetgo RS485 SHT20 Sensor Module delivers industrial-grade, high-precision temperature (±0.3°C) and humidity (±3% RH) monitoring. Featuring a lightning-protected RS485 interface compatible with Modbus protocol, it supports customizable device addressing and operates efficiently across a broad temperature and humidity range, making it ideal for professional-grade environmental sensing. ## Description Description: This RS485 SHT20 Temperature Humidity Sensor adopts industrial-grade chip and high precision temperature and humidity probe to ensure the excellent reliability, high precision and interchangeability of the products. RS485 hardware interface (with lightning protection design), the protocol layer compatibility standard industry Modbus protocol. Specifications: Working voltage: 9-36V Maximum power: 0.3W Operating temperature: -20 ℃ ~60 ℃, humidity 0% RH~80% RH Accuracy: Temperature ± 0.3 ℃ (25 ℃), humidity ± 3% RH (25 ℃) Output interface: RS485 (standard Rtu protocol) Device address: can be set to 1-255, the default is 1 Baud rate: 9600, 8 bits of data, 1 stop, no parity Wiring instructions: Red: Positive Power Black: Negative Power Yellow: 485-A White: 485-B Package Included: 1* RS485 SHT20 Temperature Humidity Transmitter Sensor Module ## Features - RS485 SHT20 Temperature Humidity Sensor Module - High Precision Temperature Humidity Monitor Sensor - Industrial-grade chip and high precision temperature and humidity probe to ensure the excellent reliability - RS485 hardware interface (with lightning protection design), the protocol layer compatibility standard industry Modbus protocol. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B082F8WXD8 | | Best Sellers Rank | #452,612 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #559 in Humidifier Accessories | | Date First Available | December 6, 2019 | | Item Model Number | 3-01-1591 | | Item Weight | 0.634 ounces | | Manufacturer | HiLetgo | | Package Dimensions | 6.81 x 4.02 x 0.71 inches | ## Images ![HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Image 1](https://m.media-amazon.com/images/I/51N9OgH-dSL.jpg) ![HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Image 2](https://m.media-amazon.com/images/I/51l+JwqORJL.jpg) ![HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Image 3](https://m.media-amazon.com/images/I/51ITG5I6g4L.jpg) ![HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Image 4](https://m.media-amazon.com/images/I/61SCCJa4v6L.jpg) ![HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Image 5](https://m.media-amazon.com/images/I/61GS1enPF+L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Works well, but fairly squirrely addressing & compensating adjustment *by on Reviewed in the United States July 4, 2025* Red wire is supply (+)Black wire is supply (-)Yellow wire is data(+)White wire is data(-)Relative addressing is fine unless/until the implementation is wrong. Frankly it's MUCH less time consuming overall to give the MB addresses in both absolute and relative terms, as is done in virtually all professional data sheets.Register 0 (relative) is defined by the Modbus standard as (read code x04) 30001 for input registers and (read code x03) 40001 for holding registers.Register 1 (relative) is 30002 or 40002 and so on.To clarify - in *absolute* addressing terms:Register 30002 = Temp in C x10 (divide by 10 for correct value)Register 30003 = Humidity % x 10 (divide by 10 for correct value)MB addr. node is register 40258, valid values 1-247Baud rate is register 40259, valid values 9600, 14400, 19200.Temp. comp. is register 40260, valid values +/- 100 (i.e. +/- 10.0 deg. C)Hum. comp. is register 40261, valid values +/- 100 (i.e. +/- 10.0%)Thankfully, once you get past the derp, the sensor works just fine. ### ⭐⭐⭐⭐ Works fine but poorly documented *by on Reviewed in Canada March 22, 2024* Use function address 0x04 (read input register)register 0x01 (2 bytes) is temperatureregister 0x02 (2 bytes) is humidityboth registers need to be divided by 10 (ex. 215 means 21.5C) ## Frequently Bought Together - HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Taidacent SHT30 RS485 Modbus RTU Temperature and Humidity Sensor Transmitter for PLC and DCS Room Thermocouple Monitoring - USB to RS485 Converter Industrial Adapter Original FT232RL and SP485EEN Fast Communication Embedded Protection Circuits Resettable Fuse ESD Protection --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/206620113-hiletgo-rs485-sht20-temperature-humidity-sensor-module-high-precision-temperature](https://www.desertcart.pe/products/206620113-hiletgo-rs485-sht20-temperature-humidity-sensor-module-high-precision-temperature) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-07-11*