Singapore consistently ranks among the safest countries globally, with the Singapore Police Force (SPF) reporting low residential burglary rates. Nevertheless, smart security systems have become increasingly common in HDB flats, driven by the convenience of remote monitoring and integration with broader smart home setups. This guide covers the main categories of home security hardware available in Singapore, relevant regulations, and approximate costs in SGD.

Smart Locks for HDB Flat Main Doors

Digital door locks are one of the most widely adopted smart home devices in Singapore. HDB main doors typically use either a standard mortise lock or a multipoint lock, both of which have compatible smart lock replacements.

Samsung Smart Locks

Samsung digital locks remain the most recognized brand in Singapore's residential market. Models like the Samsung SHP-DR708 and SHP-DP609 support fingerprint, PIN code, RFID card, and Bluetooth access. Samsung locks are designed for the standard HDB door thickness of 40 to 50mm. Retail prices range from SGD 400 to SGD 900, with authorized dealers including Digital Lock Singapore, My Digital Lock, and Kaadas. Samsung locks connect to the Samsung SmartThings app for remote status monitoring, though remote unlocking requires the optional WiFi module.

Igloohome Smart Locks

Igloohome, a Singapore-based company, manufactures locks that operate without a constant internet connection. The Igloohome Deadbolt 2S and Mortise M2 use a time-synchronized PIN algorithm, allowing property owners to generate temporary access codes remotely without the lock itself being online. This feature is particularly relevant for landlords managing rental HDB units. Prices range from SGD 350 to SGD 700. The company's headquarters are located in Ubi, Singapore.

Yale Smart Locks

Yale, a subsidiary of Assa Abloy, sells several digital lock models through Singapore retailers. The Yale YDM 4115 and YDR 4110 are entry-level models supporting PIN and RFID access, priced between SGD 300 and SGD 500. Higher-end models like the YDM 7220 add fingerprint recognition and WiFi connectivity. Yale locks are compatible with the Yale Access app and integrate with August Home (also owned by Assa Abloy) for remote access features.

Installation Considerations

HDB main doors come in two common types: the HDB-issued mild steel gate with a wooden main door, or a single-leaf fire-rated door. Smart lock installation on the wooden door requires drilling for the mortise body and handle. Most smart lock retailers in Singapore include installation as part of the purchase price. For fire-rated doors, the lock installation must not compromise the door's fire rating, and the installer should use a compatible mortise body that fits the existing cutout dimensions.

CCTV Cameras and Recording Regulations

Multiple surveillance cameras mounted on a pole for area monitoring
Multiple surveillance cameras configured for comprehensive area monitoring.

Installing CCTV cameras inside an HDB flat is permitted under Singapore law. However, recording common areas (corridors, lift lobbies, void decks) is subject to restrictions under the Personal Data Protection Act (PDPA) enforced by the Personal Data Protection Commission (PDPC).

Regulations Summary

  • Cameras mounted inside the unit (facing inward) require no permission.
  • Cameras or video doorbells pointing at the common corridor may record personal data of neighbors and visitors. Under the PDPA, individuals should not collect personal data of others without consent or a legitimate purpose.
  • The HDB has issued guidelines stating that residents should not install surveillance devices that intrude on the privacy of neighbors or capture footage of common areas beyond what is reasonably necessary for security.
  • Video doorbell cameras (such as Ring, Aqara G4, or Xiaomi Smart Doorbell 3) with narrow field-of-view lenses (less than 120 degrees horizontal) pointed at the unit's own door are generally considered acceptable.

Recommended Camera Types

For interior monitoring, popular options include the Aqara Camera Hub G3 (SGD 120 to SGD 160), which doubles as a Zigbee hub, and the Xiaomi Smart Camera C400 (SGD 60 to SGD 90). Both store footage on microSD cards locally and offer encrypted cloud storage as a subscription option. The TP-Link Tapo C200 (SGD 40 to SGD 55) is a budget-friendly WiFi camera with pan-tilt functionality.

Cloud storage for camera footage typically costs SGD 3 to SGD 10 per month per camera, depending on the retention period (7 to 30 days) and the vendor.

Door and Window Sensors

Zigbee-based contact sensors detect when a door or window is opened or closed. In an HDB flat, these sensors are typically placed on the main door, bedroom doors, and windows. The most common models available in Singapore include:

  • Aqara Door and Window Sensor (Zigbee 3.0) at SGD 15 to SGD 22 per unit. Requires an Aqara hub. Battery life is approximately 2 years with a single CR1632 cell.
  • Xiaomi Mi Door and Window Sensor 2 at SGD 12 to SGD 18. Compatible with the Xiaomi Gateway or Aqara hubs via Zigbee.
  • Samsung SmartThings Multipurpose Sensor at SGD 30 to SGD 45. Includes vibration detection in addition to open/close status.

Contact sensors can trigger automations such as turning on lights when a door opens (useful for HDB bomb shelters converted to storerooms) or sending a push notification when a window is opened while the homeowner is away. For more on Zigbee sensor connectivity, see the article Zigbee vs WiFi for Smart Home Devices.

Motion Sensors for HDB Flats

Passive infrared (PIR) motion sensors detect movement based on body heat. In the context of HDB flats, motion sensors are used for security alerts, lighting automation, and occupancy detection for air conditioning control.

The Aqara Motion Sensor P1 (Zigbee 3.0) costs SGD 25 to SGD 35 and has a detection range of 7 meters with a 170-degree detection angle. It includes a built-in light intensity sensor, allowing it to trigger lights only when ambient brightness is below a set threshold. The Aqara FP2 presence sensor uses millimeter-wave radar instead of PIR and can detect stationary occupants (such as a person sitting at a desk), priced at SGD 75 to SGD 95.

For a 4-room HDB flat, a typical motion sensor deployment involves one sensor in the living room, one in the hallway, and one at the main entrance. This provides full coverage of shared spaces while maintaining privacy in bedrooms.

Integration with Smart Home Hubs

Security devices from different manufacturers can be unified through a central smart home hub. The three most common hub options in Singapore for security integration are:

  • Aqara Hub M2 (SGD 70 to SGD 90): Supports Zigbee 3.0, infrared blaster for legacy devices, and Apple HomeKit, Google Home, and Alexa. Functions as a siren for security alerts (with a built-in 85dB speaker).
  • Samsung SmartThings Hub (SGD 100 to SGD 140): Supports Zigbee, Z-Wave, and WiFi devices. The SmartThings app allows creation of security modes (Home, Away, Night) that adjust sensor behavior and alerts.
  • Apple HomePod Mini (SGD 139): Acts as a HomeKit hub for Zigbee devices bridged through compatible hubs (Aqara, Philips Hue). Supports HomeKit Secure Video for compatible cameras with local video analysis.

A comprehensive security setup integrated with smart lighting is discussed in the Smart Lighting Guide for Singapore Apartments.

Cost Estimates for a Full Security Setup

Component Quantity (4-room HDB) Cost Range (SGD)
Smart lock (main door) 1 $350 - $900
Digital lock (gate) 1 $200 - $500
Indoor camera 1 - 2 $60 - $160 each
Video doorbell 1 $80 - $200
Door/window sensors 4 - 6 $12 - $45 each
Motion sensors 2 - 3 $25 - $95 each
Smart home hub 1 $70 - $140

The total estimated cost for a comprehensive security setup in a 4-room HDB flat ranges from approximately SGD 900 to SGD 2,800, depending on brand selection and the number of sensors deployed.

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