How to Use This Guide
Each device in this guide is assessed across four dimensions: price (THB), setup difficulty (1=very easy to 5=requires a specialist), who benefits most, and Return on Safety — the risk reduction achieved relative to the cost. Devices are listed in recommended purchase priority order.
Device 1: mmWave Radar Sensor
Price: 2,500–4,500 THB per unit. Setup difficulty: 3/5 (requires app configuration and detection zone assignment). Benefits most: elderly people with a history of falls, those who are alone at night, those with cardiovascular disease or hypertension.
The mmWave Sensor is the single most valuable safety device for elderly people living alone — it detects falls and loss of consciousness without a camera, requires no action from the resident, works in darkness, and is accurate in spaces up to 20 sq m. Start with one unit in the bathroom and one in the bedroom.
Recommended brands: Aqara FP2 (3,200 THB — HomeKit + Matter support), Tuya mmWave Pro (2,800 THB — Home Assistant compatible), Seeed Studio MR60BHA1 (2,500 THB — for DIY builders).
Device 2: Smart Door Lock
Price: 3,500–8,000 THB. Setup difficulty: 3/5 (requires replacing the door latch; 30–60 minutes). Benefits most: elderly people with finger joint problems or hand tremors, families needing remote access control, elderly people with a history of losing keys.
Smart Locks allow residents who struggle with conventional keys to unlock via fingerprint or PIN even with shaking hands. Family members can create temporary Guest Codes for nurses or helpers, and remotely unlock in emergencies. Always choose a model with a physical key backup for power or connectivity failures.
Recommended brands: Aqara U100 (5,500 THB — Matter, HomeKit, Google), Xiaomi Smart Lock Pro (4,200 THB), Schlage Encode (7,500 THB — exceptional durability).
Device 3: Panic Button
Price: 800–1,500 THB per unit. Setup difficulty: 1/5 (plug and play). Benefits most: all elderly residents, especially those with cardiovascular disease, frequent dizziness, or a previous fall history.
Install at least two panic buttons: one at the bedside and one waterproof unit in the bathroom. Configure alerts to reach multiple family members simultaneously, not just one. A wrist-worn panic button is more accessible than a wall-mounted unit if the resident falls away from the wall. Test the signal monthly.
Recommended brands: Xiaomi Wireless Button (900 THB), Shelly Button1 (1,200 THB — Home Assistant compatible), Fibaro Button (1,500 THB — Z-Wave).
Device 4: Combined Smoke and CO Detector
Price: 1,500–3,500 THB per unit. Setup difficulty: 2/5 (ceiling mounting requires a stepladder). Benefits most: all homes using cooking gas, homes where the elderly resident sleeps with the door closed, and homes where adult children are not present overnight.
A 2-in-1 Smoke + CO combo unit is preferable to separate detectors — the price difference is minimal and it saves wall space. WiFi-connected models that send LINE Notify alerts are essential for homes where family members are not on-site. Install in the kitchen and outside the bedroom. Replace the sensor every 5–7 years.
Recommended brands: Google Nest Protect (3,500 THB — WiFi + App), Xiaomi Mijia Smoke Alarm (1,500 THB — budget option), Kidde Nighthawk (2,500 THB).
Device 5: Smart Pill Dispenser
Price: 2,500–6,000 THB. Setup difficulty: 2/5 (medication schedule setup via app). Benefits most: elderly people taking multiple daily medications, frequent forgetters, those who take incorrect doses due to confusion.
A Smart Pill Dispenser addresses missed and incorrect medication — a very common and serious problem in elderly residents. It opens the correct compartment at the scheduled time with an audible alert, locks other compartments to prevent accidental access, and sends a confirmation to family when the medication has been removed. Choose a model with a battery backup for power outages.
Recommended brands: MedReady (4,500 THB), Hero Health (5,500 THB — app-connected), Pivotell (3,000 THB — simpler model).