Certificate Awarded by HKTDC

Being a long history Original Design Manufacturer of high-quality innovative security products. The Hong Kong Trade Development Council chose our products for the "Showcase Hong Kong" Product Exhibition for showing to Her Majesty The Queen visiting Hong Kong in October 1986.

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Our News

APO joins IFA Berlin 2025

2025 年 7 月 13 日

We are coming to Berlin – Germany in September and going to show our latest Access Control. Date: 5-9 September 2025 Booth: H1.2-227 Click to register

DK-6800 Series TCP/IP Access Control

2025 年 7 月 13 日

End-User can control their access control within the same LAN. Click to learn more

DK-2800 Series now available with Mobile App

2025 年 4 月 28 日

End-User can do remote control, viewing access & alarm record and remote setting password for the device on the mobile phone. Click to learn more

APO 登陸 HKTVmall 網上購買平台

2025 年 1 月 25 日

香港澳門用戶可以直接上我地ThePlace 網站購買心儀產品。買滿HK$1000, 會有九折。 Click here to enter HKTVmall

Feature Product

About APO

We have been an ODM of security products since 1979. We are the first company in Hong Kong to produce Alarm and Access Control Systems for the worldwide market in the brand of AEI & APO.

We mainly focus on advance Access Control in TCP/IP, Standalone and Wi-Fi. Alarm in Contact ID with PSTN, Cellular Auto-Dialers, Gate Opener and Alarm Monitor Station. Further, we also do alarm accessories, such as Electrical Lock, PIR Motion Sensor, Keyswitch, Door Contact and Alarm Siren.

We have different type of security product for end-user to select. There must be one suitable for you and your properties.

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The Milestones of AEI Protect-On Systems Limited

1979

Established a private company "Advanced Electronics Industry" (AEI) in Hong Kong to manufacture Alarm and related electronic products.

1979

1985

The first company in Hong Kong to produce Access Control Keypad.

1985

1986

The first company to produce PIR Motion Sensor.

1986

1991

Moved the production facilities to China.

1991

2000

Set up an independent company "Protect-On Systems Limited" in Hong Kong to develop new products.

2000

2008

An unified company "AEI Protect-On Systems Limited" is formed in Hong Kong and registered a new trademark logo (APO) to reflect the new company and products.

2008

2014

Introduced the DK-2800 MK-II series keypads that offer three operation modes of "Stand-Alone", "Multi-Station" and "High-Security Split-Decoded".

2014

2020

Introduced the NEW Alarm Control Panel of HA-278. The alarm panel can communicate with the Contact ID Monitor Station.

2020

2021

Upgraded the DK-2800 MK-II Series into Wi-Fi version. End-User can control the device remotely.

2021

2025

Introduced the NEW DK-6800 Series of TCP/IP Access Control by using LAN Network of Access Control.

2025

AEI PROTECT-ON SYSTEMS LIMITED

Should you have any queries, or you require immediate attention, please feel free to send us an inquiry or give us a call at +852 2741 4812