DND MUR with 2Gang 2Way Switch
This is a commonly used methods to implement the DND & MUR function in Hotel guest room.
The 2Gang 2Way Switch need to have a independent 230V LED.
featues to be provided:
| DND Switch | MUR Switch | DND red LED | MUR green LED | bell switch |
|---|---|---|---|---|
| pressed | X | ON | OFF | disabled |
| released | pressed | OFF | ON | enabled |
| released | released | OFF | OFF | enabled |
*if interlocking between DND Switch and MUR switch is needed, please review K2772L-2 interlocking switch
Applicable products
| Range | 2Gang 2Way Switch | DND, MUR indicator | current rating |
|---|---|---|---|
| Ultimate 2 | G252LA-2-BSS/S241 | G2-DMB | 10AX |
| Titanium | GC252LA-2-BSS/S241 | GC2-DMB | 10AX |
| Radiance | K272L-2/S241 | K2C-DMB | 16AX |
pictures: GC252LA-2-BSS/S241 + GC2-DMB
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wiring diagram
Trouble shooting
- Why LED is ON or blinking even the switch has not been pressed?
To turn off both DND and MUR switch. check if MUR or DND LED are OFF or not?
If both LED is OFF, then check the Neutral wire is connected properly.
If either LED is "ON" or "blinking", it may due to noisy pickup on the wire.
To solve the issue can install a capacitors (275V 0.15uF X2) across the LED leads.
