SIP voice intercom YD-501
- HD voice, supports broadband audio decoding G.722 and Opus
- Supports wireless buttons (only works with specific accessories, via 433MHz wireless transmission)
- Protection level IP54
- Removable functional keys
- Supports PoE power supply
- Comes with 1 short-circuit output and 1 short-circuit input interface
- Supports standard 86 box embedded installation and wall mounting
- Supports 6 DSS keys
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