UbiBot UB-ATH Series Temperature and Humidity Probe User Guide

Introduction

The temperature and humidity probe is a self-developed product, produced and assembled in the UbiBot factory. It features an exquisite appearance and high measurement accuracy. This product adopts the MODBUS-RTU protocol, enabling remote measurement and online monitoring via a computer platform or mobile phone APP when used with a UbiBot device.

An image shows a UbiBot temperature and humidity probe with a black cable and a silver connector.

Specification

Specification	UB-ATH-N1 (1st generation)	UB-ATH-N1 (2nd generation)	UB-ATH-P1
Measuring Range	Temperature: -40~80°C Humidity: 0~100%RH	Temperature: -40~80°C Humidity: 0~100%RH	Temperature: -40~80°C Humidity: 0~100%RH
Accuracy	Temperature: ±0.3°C (0~65°C) Humidity: ±3%RH (10~90%RH)	Temperature: ±0.2°C (0~65°C) Humidity: ±2%RH (10~90%RH)	Temperature: ±0.15°C (20~60°C) Humidity: ±1.5%RH (0~80%RH)
Materials	PE+Stainless steel
Cable Length	3m (Audio) / 5m (Micro USB)
Power Supply	DC 5~12V
Max Current	144mA (@5V)
Connector	Micro USB / Audio
Communication Protocol	RS485 Modbus RTU Protocol
RS485 Address	0xC1
Baud Rate	1200 bit/s, 2400 bit/s, 4800 bit/s, 9600 bit/s (default), 19200 bit/s

Wiring Instruction

The following tables detail the wiring connections for the probe.

Micro USB Wiring

Connector Pin	VCC	B	A	GND
Micro USB	Red	White	Green	Black

Micro USB Male connector pinout: VCC (Red), D- (White), D+ (Green), GND (Black).

Audio Wiring

Connector Pin	VCC	B	A	GND
Audio	Red	Green	White	Black

Audio connector pinout: VCC (Red), B (Green), A (White), GND (Black).

Communication Protocols

1. Communication Basic Parameters

Parameter	Value
Coding System	8-bit binary
Data Bit	8 bits
Parity Checking Bit	none
Stop Bit	1 bit
Error Checking	CRC Check
Baud Rate	1200 bit/s, 2400 bit/s, 4800 bit/s, 9600 bit/s (default), 19200 bit/s

2. Data Frame Format

The Modbus-RTU communication protocol is used in the following format:

Initial structure: ≥ 4 bytes in time.
Address code: 1 byte, default 0xC1.
Function code: 1 byte, supports function code 0x03 (read only) and 0x06 (read/write).
Data area: N bytes, 16-bit data, high byte comes first.
Error check: 16-bit CRC code.
End structure: ≥ 4 bytes of time.

Request Frame Structure

Slave Address	Function Code	Register Address	No. of Registers	CRC LSB	CRC MSB
1 byte	1 byte	2 bytes	2 bytes	1 byte	1 byte

Response Frame Structure

Slave Address	Function Code	No. of Bytes	Content 1	Content 1	...	Content n	CRC
1 byte	1 byte	1 byte	2 bytes	2 bytes	...	2 bytes	2 bytes

3. Register Address

Address	Content	Register Length	Function Code	Description of definitions
0x0000	Temperature	1	03	Signed integer data, divided by 10, in [°C]
0x0001	Humidity	1	03	Unsigned integer data, divided by 10, in [0~100%]
0x0064	Address	1	03/06	1~255
0x0065	Baud Rate	1	03/06	0:1200, 1:2400, 2:4800, 3:9600, 4:19200

	UBIBOT UB-VS-N1 Vibration Sensor User Guide and Technical Specifications Comprehensive user guide and technical specifications for the UBIBOT UB-VS-N1 vibration sensor, detailing its features, use cases, communication protocols, and register addresses for environmental and industrial monitoring.
	UBIBOT UB-DWT-N1 User Guide: Dry & Wet Bulb Temperature Sensor Explore the UBIBOT UB-DWT-N1, a versatile dry and wet bulb temperature sensor for environmental monitoring and agrometeorology. Learn about its features, specifications, and Modbus-RTU communication protocols.
	UbiBot UB-LTH-N1 Temperature and Humidity Sensor User Guide Comprehensive user guide for the UbiBot UB-LTH-N1, a high-precision waterproof temperature and humidity sensor with RS485 Modbus RTU communication. Includes product introduction, use cases, features, specifications, and wiring instructions.
	UB-ATHP-N1 Atmospheric Pressure Sensor User Guide User guide for the UB-ATHP-N1 atmospheric pressure sensor by UBIBOT, detailing its features, specifications, communication protocols, and wiring instructions for environmental monitoring.
	UBIBOT UB-STH-N1 Soil Moisture, Temperature, and Humidity Sensor User Guide Comprehensive user guide for the UBIBOT UB-STH-N1 soil sensor, detailing its features, specifications, wiring, measurement methods, and communication protocols for accurate soil condition monitoring.
	UBIBOT UB-CO2 Series CO2 Sensor User Guide and Specifications Comprehensive user guide and technical specifications for the UBIBOT UB-CO2 series industrial-grade carbon dioxide sensors, detailing features, use cases, communication protocols, and register addresses.
	UbiBot UB-PT-N1 PT100 Industrial Temperature Sensor User Guide & Specs Comprehensive user guide for the UbiBot UB-PT-N1 PT100 industrial temperature sensor. Learn about its high-precision, wide-range capabilities, IP68 rating, MODBUS RTU protocol, wiring, and technical specifications for reliable temperature monitoring.
	UBIBOT UB-WD-N1 Wind Direction Sensor User Guide Comprehensive user guide for the UBIBOT UB-WD-N1 wind direction sensor, detailing its features, specifications, mounting, wiring, and communication protocols for environmental monitoring.