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Sensing Range 2"~6" (5~15 cm) LEDs Red- Standby
Quick Close/Anti-Tailgate
Loop diagnostics
Loop Failure - The green power indicator flashes twice per second if the loop circuit is open and 10 times per second if the loop circuit is shorted
Doorking 1830-402 Replacement Memory Chip Liftmaster LA400 Sensing Range 2"~6" (5~15 cm)Doorking 1830 402 Replacement Memory Chip 1830 402 has changed to 1830 404 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. A 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 It will function identically to the old 1830 402 memory chip, which is obsolete, and plugs into the current memory chip socket.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
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