Product Specification Book

one, Product Overview
BTH-2AT2-EX2 It is a high-precision split temperature and humidity transmitter with output of 4-20 mA Standard current signal, LCD Large-screen display design, generous and beautiful.This product uses imported sensor probes to ensure excellent measurement performance of the product.The product has the characteristics of strong protection performance, high measurement accuracy, wide measurement range and good data consistency.
two, Application scope
Widely used in communication computer rooms, smart buildings, factory workshops, warehouses, medicine warehouses, libraries, museums, laboratories, offices, ventilation ducts and other places.
three, Features
1. Super stable and anti-interference ability;
2. Imported sensor probe, high measurement accuracy;
3. LCD Large-screen display design, generous and beautiful;
4. Wall-mounted structural design, easy to install;
5. Standard current signal 4-20mA output;
6. Linear output, integrated temperature and humidity.
Four, Main technical parameters
Rated voltage | 24VDC±20% |
Measurement range | temperature: 0~50℃ humidity: 0~100%RH |
Measurement accuracy | temperature: ±0.5℃ Resolution 0.1 ℃ humidity: ±3%RH Resolution 0.1%RH |
Output | temperature: 4-20mA = 0~50℃ humidity: 4-20mA = 0~100%RH |
Maximum load resistance | ≤500Europe |
Effective working area | 10~20m2/Only |
Installation method | Wall-mounted installation |
Product case size | 120mm*115mm*35mm |
External power cord length | 1m |
Probe lead wire length | 2m |
Net weight of product | 300g |
5. Correlationship between signal output and measurement range


Data calculation formula:
1、Temperature: (50-0) ℃/(20-4) mA=3.125℃/mA;
When the current tested is: x mA; Then the temperature = 3.125*(x-4)℃。
2、Humidity: (100-0)% RH /(20-4) mA=6.25%RH/mA;
When the current tested is: x mA; Then humidity = 6.25 *(x-4)%RH。
6. Installation and wiring instructions
Serial number | Line color | definition | illustrate |
1 | red | VCC | Power supply ( 24VDC) |
2 | black | GND | Negative power supply |
3 | yellow | T_Iout | Temperature current output |
4 | green | H_Iout | Humidity current output |
7. Quality assurance
Warranty period 12Months.During the quality assurance period, based on normal use and non-human damage, our company provides free maintenance services for the products.
8. Things to note
1.Do not install directly in heat, cold or under sunlight;
2.It is prohibited to place the product in steam, water mist, water curtains or condensation environments for a long time;
3.If the product works in dust or other polluted environments, the product must be cleaned regularly.