This is the layout we mark on a king room floor plan before the electrical drawings are issued for construction. It is written as a schedule rather than an explanation, so it can be checked against a drawing directly.
The king room differs from the twin room in two specific ways — panel positions and socket positions — and both differences run in opposite directions. Getting one right and the other wrong is a common outcome when the same detail is copied between room types.
Entrance: Door Frame
| Item | Provision | Height |
|---|---|---|
| Door plate | Single 86 mm back box, beside door frame | 1.35 m FFL |
| Door contact | Mounted on door frame, magnet on leaf | Top of frame |
The door contact triggers the corridor light when the door opens, so the guest is not searching for the card slot in the dark. Two wires, no polarity.
The door plate carries the doorbell button, Do Not Disturb and Make Up Room indicators. 1.35 m puts the button within comfortable reach for most adults and keeps the indicator at eye level from close range.
Entrance: Wall Opposite the Door
Reserve a three-gang 86 mm back box.
| Gang | Device | Controls |
|---|---|---|
| 1 | Key card power switch | Room power, welcome scene |
| 2 | Six-button panel | Corridor light, Make Up Room, Do Not Disturb, mirror light, bathroom light, exhaust fan |
| 3 | Thermostat | HVAC setpoint, fan speed, mode |
The six-button panel covers both the entrance and bathroom groups. Six is the practical maximum — beyond that guests stop reading labels.
The key card switch carries the room’s main load, so relay rating matters. This is where low-cost units fail first, and the failure mode is the entire room losing power.
Bedside: Both Sides
Reserve a single 86 mm back box on each side of the bed.
This is the key difference from a twin room. In a king room, each guest gets a panel on their own side, giving independent reading light control plus shared control of room functions.
Suggested button assignment, left side:
| Position | Function |
|---|---|
| Closest to bed | Left reading light |
| 2 | Room lighting |
| 3 | Curtain open |
| 4 | Curtain close |
| 5 | Sleep scene |
| 6 | Master off |
The right side panel mirrors this with the right reading light in the closest position.
The reading light rule
The reading light goes on the button closest to the bed, on both panels.
It is the function a guest reaches for most often, in the dark, without sitting up. Placing it in a middle position for visual symmetry on the drawing is the most common bedside layout error and it is noticed by guests every single night.
Socket Positions
Bedside sockets in a king room go on the outer side, away from the bed centre.
This is the opposite of the twin room rule, and it is where copied details go wrong.
The reason is practical. Guests charge a phone and lay it on the nightstand. A socket at the outer edge keeps the charging cable away from the sleeping area and off the bed. A socket placed toward the bed centre drapes the cable across the pillow line.
Thermostat
Two options:
- Integrated in the entrance three-gang group — tidy, one back box, works where the entrance opens directly into the bedroom
- Separate at the bedroom threshold — better temperature reading where the entrance is a corridor with the bathroom door in between
A thermostat mounted in an entrance corridor reads corridor temperature, not bedroom temperature. In rooms with an entry vestibule, place it at the bedroom threshold.
Complete Back Box Schedule
| Location | Box type | Contents |
|---|---|---|
| Beside door frame | Single 86 mm, 1.35 m FFL | Door plate |
| Door frame | Surface | Door contact |
| Opposite door | Three-gang 86 mm | Key card switch, six-button panel, thermostat |
| Bed left | Single 86 mm | Bedside panel |
| Bed right | Single 86 mm | Bedside panel |
| Bed left, outer | Socket outlet | Power + USB |
| Bed right, outer | Socket outlet | Power + USB |
| Ceiling void, entrance | Accessible enclosure | RCU host |
Control Point Estimate
A typical king room comes to roughly:
- Corridor light
- Room general lighting
- Cove or accent lighting
- Reading light left
- Reading light right
- Mirror light
- Bathroom ceiling light
- Exhaust fan
- Curtain motor — open, close, stop
- Controlled sockets
- HVAC interface
- Door plate indicators
Count controlled circuits, not fixtures. Six downlights on one circuit is one point; six individually dimmed is six.
FAQ
Can the two bedside panels have different button layouts?
Yes, and they usually should — each side’s reading light is in the closest position, so the two panels are mirrored rather than identical.
What if the room has no entry vestibule?
Then the entrance three-gang group faces directly into the bedroom and the integrated thermostat option works well. The schedule is otherwise unchanged.
Does the RCU need to be in the ceiling void?
Not necessarily — a wardrobe position also works. The requirements are maintenance access without entering the guest area, and reach for all panel cable runs.
Can GLMZK check a king room drawing before construction?
Yes. Send the room type plan and control point list and we will return a marked-up panel schedule with button assignments and a wiring diagram.
Related Solutions
- Smart hotel RCU system
- Guest room control solution
- Hotel lighting and dimming control
- Smart hotel door plate
Contact GLMZK
GLMZK manufactures hotel RCU systems, guest room control panels, door plates and key card power switches. We supply contractors and system integrators worldwide, with OEM panel design and full wiring documentation.
Send us your room type, key count and control point list, and we will return a panel schedule and wiring diagram.
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