Ontech Technical Notes
Here you will find some more profound information about your Ontech products.
| 001 Channel number | Here are the channel numbers for the card holder radio and how DIP switches are set for the different channels in older Ontech devices. | 
| 003 Connect a sensor for 4-20mA measurements | Here’s how to connect a sensor to measure 4.20mA in the Ontech GSM devices. | 
| 005 SMS Commands for Ontech GSM | Here is a list of SMS commands for controlling the Ontech GSM devices. | 
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