Wireless DC doorbell,3V,38 Melodies,learning system,D3903
Description
General information:
| Type of current: | DC |
| Nominal voltage [V]: | 4.5 |
| Color | Black White |
| Sound | 38 |
| Loudness [dB] | 50-90 |
| Volume adjustment | Yes |
| Power supply(Receiver) | 3*1.5V AA battery(not included) |
| Power supply(Button) | 1*23A 12V battery(included) |
| Material | ABS |
| Working Range | 200M(in open area) |
| Work Frequency | 433MHz |
| Certificate | CE RoHS |
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