Now we haven’t support for this type of device in Pluto. However adding support for a new device isn’t too hard so I could help you. Do you have any protocol for communicating with your device?
Here it is:http://www.elkproducts.com/pdf/ELK-M1_RS232_PROTOCOL.pdf
I still haven't bought the product yet but for sure, this is the product that I will be buying.