Schöner junger Elektriker arbeitet auf der Baustelle - Stockfoto & -bild

Worker working inside the building

Technician checks burglar alarm in professional building

Technician checks burglar alarm in professional building

Installing a device on the wall

Electrician fitting a thermostat system

Man fitting alarm to wall

Technician checks burglar alarm in professional building

The building alarm and burglary

Electrician installing a socket

Man fixing a technical problem at home

Men regulate temperature on control panel of central heating

Man checking appearance of wall device

Woler on the phone repairs the ceiling air conditioning unit

Portrait of woman fitting electronic keypad

Female builder fixing a wall thermostat

Man installing a programmable room thermostat