Main features: 1. Small volume, convenient installation 2. Simple operation of the current protection device, at a touch device can return towork in 3. The out put torque and low noise 4. Make sure the voltage ofworking environment . 5. Choose the exact input pointand well fix up 6. Make sure  whole screws oftransformer are well locked. 7. Setting  transformer onstable and dry wall. 8. Collecting cable and wire onthe wire box of working place 9. Keeping from accident caused,do not disassemblee and refit locked parts or wiring of transformer whenassembly proceeding