4.3"双绞线对讲系统，# RL-617LB43
- 4.3” TFT wide screen with low power consumption, no radiation and high definition.
- Electric or magnetic lock release.
- Talking volume, images’ brightness and chroma adjustable.
- Two-wire non-polarity twisted pair connection.
- 16 chord melodies for option.
- Secondary doorbell function.
- Main/sub unit setting option.
- Room number editing function.
- Do Not Disturb function
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- 4.3” TFT wide screen with low power consumption, no radiation and high definition.
- Electric or magnetic lock release.
- Talking volume, images’ brightness and chroma adjustable.
- Two-wire non-polarity twisted pair connection.
- 16 chord melodies for option.
- 次要门铃功能。
- 主/子单元设置选项。
- Room number editing function.
- 免打扰功能