Gsm Relay
GSM Alarm operation :
http://remotesmart.wikidot.com/local--files/gsm-relay/GSM2010alarms.pdf
GSMRELAY with 10 meter temperature sensor, 5th external relay, Nokia 3310 phone, extra cable, case and power supplies
principle of alarm fuctions
Operation of alrams, low temperature m high temperature, external alarm , power failure alarm and list of ten receivers.
How battery can be replaced by a regulator
a picture of battery replacment
A picture of four plug installtion of GSM -relay
page revision: 54, last edited: 12 Apr 2020 13:39
