GSM Remote Garage Door Opener Relay Switch, Quad-Band 850/900/1800/1900 MHz, No Call Charges and SMS Confirmation for Garage Door Access

[PROGRAMMABLE SMS CONFIRMATION] Each relay action triggers an SMS confirmation return to the owner or authorized caller, providing real-time updates on the gate's status. This customizable feature allows you to personalize how and when you receive notifications. Additionally, the relay's opening and closing time is fully programmable, allowing you to set precise operating times to suit your requirements. [FREE OPERATION] Enjoy remote access control with no call charges. The GSM relay switch automatically answers calls from your authorized number and performs the activation or deactivation action on the first ring. This innovative feature eliminates the need for costly monthly fees or additional service subscriptions, allowing you to manage your property efficiently and affordably. [GLOBAL GSM COMPATIBILITY] This GSM gate opener operates on four bands: 850/900/1800/1900 MHz, making it compatible with GSM networks worldwide. Wherever you are, you You can remotely control your gate or door from anywhere, with no distance limitations. Enhanced antenna control ensures a more stable signal so your security measures remain reliable and never drop, providing peace of mind. [ADVANCED SECURITY SYSTEM] Security is paramount with this device. It uses caller ID for strict identification, automatically ignoring unknown callers. You can easily add or remove up to 200 authorized phone numbers via SMS text command. This eliminates the need to distribute remote controls or physical keys to different users, making access management both secure and convenient. [VERSATILE MULTI-APPLICATIONS] This GSM gate opener is designed for a wide range of uses, including gates, bollards, barriers, garage doors, shutters, access doors, and various machinery. Its robust NC/NO dry contact output handles up to 3A/240VAC, making it suitable for controlling various types of automated equipment. Its compact size and universal DC power supply ensure easy installation in diverse environments.