For extension of the doorbell of SMARTEK series: OR-DB-LT-126 Battery not required Learning system (automatic configuration) Hermetic button.
| General information: |
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| Possibility of extension by an additional transmitters: | No |
| Receiver: |
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| Power supply of the receiver: | battery-less V |
| Optical indication: | No |
| Transmitter: |
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| Dimensions of the transmitter - height: | 83 mm |
| Dimensions of the transmitter - depth: | 16 mm |
| Power supply of the transmitter: | IPX7 |
| Type of power supply of the transmitter: | battery less |
| Batery included: | No |
| Dimensions of the transmitter - width: | 83 mm |
