Vaillant VR 920 Safety & Instruction Manual page 8

6 Technical data
6.2 Technical data – Plug-in power
supply unit
Measuring voltage
Rated current
Output AC voltage
Max. output direct cur-
rent
Power frequency
Level of protection
Protection class
Permitted degree of
environmental pollution
6
110 ... 240 V a.c.
0.5 A
5 V
2.1 A
50/60 Hz
IP 20
II
2