Loyal Rich Enterprise Ltd.
A consumer electronic manufacturer of audio items such as cd boombox, cd alarm clock radio, portable radio cassette recorder; ac/dc portable radio, led alarm clock radio, walkman and vcd/dvd player. Based in Hong Kong.
http://www.loyalrich.com

Beijing Shidao Soloon Group
A manufacturer of photo-electric smoke detector, heat detector, intelligent fire auto-alarm linked system, collecting and distributing fire auto-alarm in China.
http://www.shidaosoloon.com

Smoke Cloak
Smokecloak from Martin Security, tågesikring
http://www.smokecloak.com/

Shenzhen Jiaheyi Sci Co., Ltd
JHY security offers residential smoke alarms, gas alarms, carbon monoxide alarms (CO alarms) and vehicle carbon monoxide alarms (CO alarm), photoelectrical smoke alarms, travel data recorders. We serve a wide variety of markets on both the OEM level and finished product level. Over the past years, our products have been sold worldwide, for example, China, North America, Europe, Middle East and Africa.
http://www.jhy-security.cn/

George Alarm Company
Specializing in commercial and residential alarm systems, including fire and burgler alarms, video surveillance, outdoor systems, long range radio monitoring, and personal systems. Springfield, Illinois.
http://www.georgealarm.com/

Radio Data Technology Limited
RDT is a UK company specialising in, radio modems, radio telemetry, wireless video, radiotelemetry, for applications such as, traffic, water, utilities, agriculture, transport, security, industrial automation, SCADA
http://www.radiodata.co.uk/

System Sensor
System Sensor manufactures smoke and heat detection, duct and sprinkler monitoring, and emergency notification products. Innovation is our way of life. We design fire, carbon monoxide and heat detection and notification devices that use the most innovative technologies in the most inventive ways. Our products are convenient to install, efficient to operate and offer the highest level of reliability. In other words, we make it our business to develop advanced ideas that deliver advanced solutions.
http://www.systemsensor.com/

Myntahl Corp.
Manufacturer of buzzer, alarm, piezo alarm, electronic buzzers, alarm annunciator, siren, magnetic alarm transducers and external-driven piezo.
http://www.myntahl.com/

Asiatic Union Industries Ltd
Audio and LED Clock manufacturer and exporter for alarm clock, clock radio, radio, telephone, CD palyer
http://www.asiaticunion.com

Sinner Computing - GigAlarm
GigAlarm - Compact Multi-Function Alarm and Reminder Utility
http://www.sinnercomputing.com/GigAlarm.htm