Description:OOTDTY  brand new and high quality.Feature: calls can open the door remotely with zero call charges!200 users can be set to open the door within a limited time period!Support 200 groups of numbers, each group number can be set to control the relay within the specified time period.One way relay output, the authorized number is closed after calling in, and automatically disconnects after reaching the set time.After the permission phone controls the relay, an action message can be sent to the user.Between 0 and 999 seconds, the relay closing time can be arbitrarily controlled, where 0 means: the relay is closed after 0.5 seconds, and 999 means: the relay is always closed until the permission number is called.The current status of the device (relay status and GSM signal value) can be queried via SMS command.You can periodically upload the current status of the device to the first user by SMS.Use the clock on the module to send a text message to yourself each time you turn it on.Easy and simple to install, remove and operate.Specifications:Item Type: Gate OpenerMaterial: Plastic+MetalSize: 13x7.4x2.7cm/5.1x2.9x1.06inColor: As shownGSM Frequency: 850/900/1800/1900MHzDigital output: One relay output, 3A/240VACWorking power consumption: 12V input, maximum current 50mASIM card: support 3V SIM cardGSM antenna: 50Ω SMA antenna interfaceWorking temperature: -20-60°C/-4-140℉Relative humidity: 10-90%Optional Type: 2GQuantity: 1 SetApplications:Remote open/close swing/sliding gates, doors, shutters, garage doors,locks with a free call!Residential: Door,gate,garage access control, electronic fan,microwave,air-conditioner control.Industry: Remote switch equipment, for example: street lights, solar power, motor, inverter, PLC, pumps, fans, etc.Agriculture: Remote control pumps, etc.Business: Remote control electronic boxes,bright billboards,LED signs,etc.Setting Methods:1.Insert a card into the RTU5024 GSM controller.2.Connect the GSM antenna and turn on the power switch.3.Edit the SMS with your and send it to the card number in the RTU5024 GSM controller. After receiving, it will reply to the SMS confirmation.(Please refer to the manual for more settings operation.)Note:Transition: 1cm=10mm=0.39inchPlease allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Includes:1 x Gate Opener1 x GSM Antenna1 x User Manual1 x Power Adapter