Wireless contact systems operating at 433 MHz are designed for security and alarm applications. They include various models such as contact sensors, GSM-14A and GSM-14K modules, and relay units. These devices are suitable for monitoring doors, windows, and other access points. Many models feature external antennas and are housed in weather-resistant cases for outdoor use.
Some systems support Wi-Fi connectivity and have multiple outputs for integration with alarm panels. They are compatible with different battery sizes, including 1.2 Ah and 7 Ah options. These contact systems are reliable for security setups requiring remote monitoring and control. They are part of a broader range of burglar and fire alarm components for comprehensive protection.
