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Compatible with pad or post mounting
and below -40°F requires a gear box and battery heaters
The 120/220V AC power source is connected to a switching power supply
Posilock automatic closure system
making it ideal for demanding installations requiring superior performance
Doorking 1830-404 Replacement Memory Chip Wireless Intercom Compatible with pad or postDoorking 1830 404 Replacement Memory Chip Original part Used with models 1833, 1835, 1837 and 1838 Please consult your original user manual for compatibility. Picture and manual are provided as a reference only. This new memory module will be used on the 1830 series entry systems. It will function identically to the old 1830 402 memory chip, which is obsolete, and plugs into the current memory chip socket. The arrow on the module is to be pointed UP,
