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USB 2 x USB 2.0 Host connector, 1 mini-USB OTG
connector
LAN 1 Channel Giga LAN
Audio
Mic input on the front panel, 2W internal
stereo speaker, 3.5mm audio In/Out
connector
Buzzer Internal Buzzer driven by GPIO
RTC High accuracy internal RTC (keep track of
time one week after power off)
RS232 2 Channels by default
RS485
1 Channel by default, 2 Channels at most.
The RS485 circuit automatically controls
the Input and Output direction (no need
for software control)
GPIO/Wiegand Two 5V Logic GPIO Outputs, can be used as
Wiegand signal
Relay One relay with “Normally Connected” and
“Normally Open” Output
WiFi/BT WiFi/BT module comes with the CM4
ZIGBEE Internal Zigbee supported, NOT mounted by
default
4G/LTE Internal 4G/LTE module supported, NOT
mounted by default
Camera Camera on the front panel, NOT mounted by
default
Power Input 9V~36V DC