Quanzhou Huatong Electronics Technology Development Co., Ltd. is based in China and lists alarm and surveillance equipment on Global Trade Plaza. The Power electronics alarm system features wireless infrared detectors with up to 10 km transmitting distance, 100 independent zones, LED display, adjustable alarm volume and duration, and storage for 60 alarm records. It includes a computer network module with RS232 interface for real-time monitoring and electronic map management, remote control operation, 10-second voice recording, and automatic dialing of six telephone numbers. The GSM burglar alarm system uses a built-in GSM industrial module and supports three wired zones and six wireless zones, each configurable as bypassing, burglary, or emergency zones. Functions such as arming, disarming, and zone naming can be performed remotely by SMS or phone call. The panel sends SMS reports for alarms, AC power failure, and line faults, stores an 8-second pre-recorded message, and dials four preset numbers while sending SMS to four others. Both systems are packed one set per color box, 20 boxes per carton.