I am selling digital thermometer
with serial port(RS-232) connection.
Cable length approx. 3m/10ft
Weight 40g
Water resistant, useful for measuring liquid temperature.
This thermometer send data in ASCII format, any OS, no software
needed.
Works with most USB Serial adapters, native serial ports.
Measures temperatures from -55°C to +125°C, accuracy
2°C
Accuracy -10°C to +85°C is 0.5°C
Thermometer resolution 0.1°C
Based on DS18B20 digital sensor and Attiny85 microcontroller.
Top quality DB9 shell from Harting.
Serial communication parameter is 9600 8N1(see pictures)
Output logic level is 0-5V
Temperature measurement every ~2s.
Used serial pins:
pin
|
signal
|
description
|
2
|
RxD
|
Read temperature
|
4
|
DTR
|
Power supply
|
5
|
GND
|
Ground
|
7
|
RTS
|
Power supply
|
All thermometers are tested and is in working condition.
Please check my other listings for different modifications.