
Intrusion Detection
Sensors on doors and windows detect break-ins such as lock picking and broken windows, and you can set protected zones even while you're home.

SECURITY SYSTEM
Guardians of Your Peace of Mind
We've partnered with one of Japan's leading security companies to provide all-around protection for your home. Whether you're out or relaxing at home, advanced sensors and 24-hour monitoring let you live with greater peace of mind.
Owning a home in the heart of Tokyo is more than an investment — it's a commitment to your family and your future.
OK PRIME Shirokane-Takanawa features a building-wide security system from ALSOK, one of Japan's best-known security brands, combining smart access control, 24-hour monitoring and emergency response to create a safe, worry-free home.
ALSOK
HOME ALSOK Security Plan for Apartments & Condominiums
ALSOK provides professional security services designed specifically for apartment buildings and condominiums, linking sensors to a main controller for round-the-clock protection. With initial costs from ¥0, guards dispatched in an emergency and no internet line required, it's also an excellent fit for rental homes.
ALSOK basic home security includes:
On-call guards rush to the scene. If anything unusual happens, they assess the situation, take action and report back to you. Whether it's a break-in or a sudden illness, you can feel safe in any situation.

Sensors on doors and windows detect break-ins such as lock picking and broken windows, and you can set protected zones even while you're home.

If you're harassed by a pushy salesperson or suddenly fall ill, just press the emergency button to alert the ALSOK monitoring center immediately.

Sensors detect abnormal temperature rises or smoke caused by fire and automatically notify the monitoring center.
SERVICE

Sensors on doors and windows detect break-ins such as broken windows or picked locks, with protection available even while you're home.

Sensors detect abnormal temperature rises or smoke caused by fire and send an automatic alert.

If you're threatened by an intruder or suddenly fall ill, just press the emergency button to alert ALSOK right away.

The system detects whether doors and windows are open or closed to confirm they're locked, logs device activity and sends you email notifications.

With the dedicated app, you can check on your home and control the system remotely anytime, anywhere, and switch between "Away" and "Home" security modes.

If anything goes wrong, ALSOK dispatches professionally trained guards from its nationwide network of standby bases to reach the scene as quickly as possible, handle the situation and report back.
Once an emergency is reported to the monitoring center, the guard closest to your home rushes to the scene. Extensive professional experience and advanced systems ensure a fast response.

Guards set out from standby bases across Japan and take the fastest route to the scene.

Alerts are received 24 hours a day, 365 days a year, and handled immediately with extensive experience and advanced systems.

In an emergency, highly skilled, professionally trained guards rush to the scene to take action!
FEATURE
If you're threatened by an intruder or suddenly fall ill, just press the emergency button to alert ALSOK right away. With both sensors and a remote emergency button, help is on the way the moment you need it.

The system detects whether doors and windows are open or closed to confirm they're locked, logs device activity and sends you email notifications. Checking that your home is secure before and after you go out is effortless.

With the dedicated app, you can check on your home and control the system remotely anytime, anywhere, and switch between "Away" and "Home" security modes.

If anything goes wrong, ALSOK dispatches professionally trained guards from its nationwide network of standby bases to reach the scene as quickly as possible, handle the situation and report back.

DEVICE
Example installations for typical 2LDK and 3LDK layouts. The main controller, sensors and remote emergency button are placed in the best spots throughout your home for complete protection.

1
Main Controller
Example location: wall near the kitchen

2
Open/Close Sensor
Example location: top inside of the front door

3
Sensor Transmitter
Example location: inside frame of the front door

4
Lock Check Sensor
Example location: above the balcony window lock

5
Motion Sensor
Example location: ceiling of the living room, hallway, etc.

6
Fire Sensor (Heat)
Example location: kitchen ceiling

7
Remote Emergency Button
Example location: an easy-to-reach spot such as the living room


OPERATION
Use a passcode or the dedicated app to operate and check the system easily, even while you're out. Whenever you're unsure, you can see what's happening at home from anywhere.
The main controller has a built-in wireless connection, so it can be installed without an internet or phone line. No dedicated security line and no communication fees — and line outages and power failures are monitored too.

FAQ
The entire building is equipped with ALSOK's HOME ALSOK security plan for apartments and condominiums. Designed for multi-unit housing, it combines intrusion monitoring, fire detection, emergency alerts, remote control and 24-hour guard dispatch for all-around protection.
An auto-lock entrance alone can't stop someone from slipping in behind a resident or delivery person. With ALSOK home security, if something unusual happens, a guard is dispatched to the scene, takes appropriate action and then reports back to you.
Yes. The system has a Home security mode that lets you set protection for specific areas such as the entrance and windows. For example, you can disarm just the bedroom while keeping the rest of your home protected, so you can relax with peace of mind.
The specifications, features and services shown on this page are subject to the final construction drawings and the handover equipment list. Any changes due to construction conditions, supplier adjustments or regulatory updates will follow the official project announcements.
Book a viewing or send us an inquiry through our website. The WinnerLife team will walk you through the security features, interior layout and investment details of OK PRIME+ Shirokane-Takanawa.
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