you can use node-red with openhab and telegram nodes to control openhab by telegram.
for openhab and node-red see https://community.openhab.org/t/node-red-as-alternative-rule-engine/29509
if you are using openhabian it is very easy to install.
you can use node-red with openhab and telegram nodes to control openhab by telegram.
for openhab and node-red see https://community.openhab.org/t/node-red-as-alternative-rule-engine/29509
if you are using openhabian it is very easy to install.