Where Does Wasted Energy Come From?
Many Bangkok homes pay more than necessary for electricity because of deeply ingrained habits — leaving lights or AC running in empty rooms, devices plugged in on standby, or AC running at unnecessarily low temperatures.
Real usage detection Smart Home systems automatically cut this waste without requiring residents to change their behavior.
Real Usage Detection Technology
Motion Sensors Detect movement in rooms. If no movement is detected for a set period (e.g., 10 minutes), the system automatically turns off lights and raises AC temperature. Ideal for bathrooms, living rooms, and offices.
mmWave Presence Sensors Far more accurate than motion sensors — they can detect stationary people (sleeping, reading). This prevents lights from turning off while someone is in the room just because they’re not moving. Ideal for bedrooms and home offices.
Smart Plugs with Energy Monitoring Monitor standby power for each device and automatically cut power during set periods (e.g., 1am to 6am). TVs, audio systems, and computers left on standby consume 5–15 watts per device continuously.
Light Sensors Adjust light brightness based on incoming natural light. When sunlight is sufficient during the day, the system reduces bulb brightness by 40–60% while maintaining adequate room illumination.
Energy Savings by Room
Living Room: Lights and AC turn off automatically when everyone leaves — avg. savings ฿30–50/day Bedroom: AC temperature automatically rises after midnight (you’re asleep and don’t feel it) — avg. savings ฿20–35/day Bathroom: Lights auto-on/off via motion — avg. savings ฿5–10/day Standby cut whole-home: All standby power cut after midnight — avg. savings ฿10–20/day Monthly total: ฿1,950–3,450 for a 4-bedroom Bangkok home
ROI on Presence Detection Investment
| Device | Cost | Monthly Savings | Payback | |--------|------|----------------|--------| | Motion Sensor x5 | ฿5,000 | ฿600–900 | 6–8 months | | mmWave Sensor x3 | ฿9,000 | ฿800–1,200 | 7–11 months | | Smart Plug x8 | ฿8,000 | ฿300–500 | 16–26 months | HappySmart installs and connects all devices into one system, controllable via a single LINE OA.