PA1204: Serial (RS-232) Temperature Humidity Atmospheric Pressure Light Sensor: Made in CANADA


The measured temperature is sent directly in °C or °F by a simple text protocol. The sensor sends the measured value according to a specific ASCII question-answer protocol.

The thermal sensor uses an element with an accuracy of ± 0.5°C for temperature measuring. A red LED indicates that temperature measuring is in progress.

  • Temperature and Humidity measuring systems
  • Industrial measuring and regulation
  • Temperature measuring in warehouses, production and residential premises
  • After connection to AeroSense software, transfer data via Ethernet

$169.99 (USD)

  • Basic properties
  • The sensor is connected to PC over standard RS-232
  • Temperature measuring in range from -55°C to +125°C (-67°F to +257°F)
  • It can operate in Question-Answer mode
  • Simple communication protocol
  • Does not require power supply, powered directly from PC serial port
  • Programmable baud rates from 1200-115200 baud.


Downloads & Datasheets


Technical specifications

Basic parameters

Range of measured temperature

-40°C to +85°C (-40 °F to +185 °F)
Measurement accuracy +/- 0.5 °C
Measuring speed Respond to query within 1000ms at maximum
Measuring element Semiconductor
Data format ASCII, described in specification
Communication parameters 1200-115200 baud 8N1
Connector DB9F - Female (connected to PC directly)
+ Communication line RS-232 (RxD, TxD, GND, DTR, RTS)
+ Turning on thermometer Setting DTR and RTS to 'On' value