Enhance door security and convenience with the WH-300 door opener, which features advanced 4G GSM technology for reliable remote access via a user-friendly app. The system allows you to remotely control and monitor door operations, ensuring safety and efficiency Remote control via app: Manage door operations from anywhere with your smartphone Integrated alarm system: Enhances security by alerting you to unauthorized access Two digital inputs: Allows for connection of additional security devices or sensors Ideal for residential or commercial use, the WH-300 provides peace of mind with its powerful features and easy installation<br><br>WH-300 4G-US (applicable to North America, the , Canada, and Mexico) Model Number:WH-300 Product Name:4G SMS Alarm Controller Usage:Garage Shutter Door and Home alarm system Power supply:AC/DC 9V~36V/1A 4G-US(For North America): LTE-FDD Bands: B2/B4/B5//B13/B14/B66/B71 WCDMA: B2/B4/B5 Communication protocol:GSM PHASE 2/2+ (include data service) Digital Input:2 NC/NO dry contact Digital Output:1 Relay, 3A/125VAC SIM Card:Nano type, 3V Antenna:50 Ω SMA Working temperature:-10℃~+60℃ Storage temperature:-20℃~+60℃ Relative humidity:10-90%, No condensation Material: Plastic Color: As shown<br><br>Package Contents: 1 x Gate Door Opener Kit 1 x English instruction manual<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.