SMS Activated Relay
4G GSM Remote Switch for Gate, Garage &amp Industrial Control
Control Devices Remotely Without WiFi or Internet
This advanced SMS-activated relay switch allows you to control gates, shutters, garage doors, and industrial systems remotely via a free mobile call—no WiFi or internet required. Ideal for elevators, parking lots, resorts, warehouses, control rooms, and unmanned facilities, it offers secure, cost-free access through global GSM networks.
Key Features of the 4G GSM Remote Relay
GSM-Based Remote Control
Supports 3G and 4G networks with free call activation, SMS commands, and app-based access via the Callny Control app.
Multi-User Authorization
Add up to 1001 authorized users for secure access. Unknown callers are automatically rejected for enhanced protection.
Adjustable Relay Timing
Customize relay closure from 0 to 9999 seconds or enable continuous operation with no time limit.
App &amp SMS Integration
Control the device via mobile app, SMS, or direct call—no data charges, no internet dependency.
Durable ABS Housing
Encased in high-quality plastic for impact resistance, insulation, and long-term reliability. Wall-mountable for easy installation.
Wide Voltage Support
Operates on DC 9V–36V, compatible with a variety of electrical systems and industrial setups.
Applications
Garage door opener
Gate and shutter controller
Elevator access
Parking lot automation
Warehouse and control room systems
Traffic signal control
Remote machine activation
Smart access for resorts and base stations
Technical Specifications
Parameter
Value
Rated Voltage
DC 9V–36V / 1A (Power supply not included)
Operating Temperature
-10℃ to +60℃
Storage Temperature
-20℃ to +60℃
Humidity
10–90% (non-condensing)
GSM Frequencies
850/900/1800/1900 MHz
3G/4G Compatibility
WCDMA, CDMA2000, LTE-FDD/TDD
Communication Protocol
GSM PHASE 2/2+ with data service
Output Relay Voltage
3A / 240V AC
SIM Card Type
Nano SIM (3V)
Antenna Type
50 Ω SMA
Wired Switch Support
Yes
Dimensions
96.5 × 50 × 31.5 mm
Net Weight
88g
Relay Port
1-way output
Contact Capacity
5A @ 250VAC, 20A @ 14VDC, 20A @ 5VDC
Why Choose This SMS Relay Switch?
Whether you're managing access to a garage, gate, or industrial system, this GSM relay switch offers secure, remote control without relying on WiFi or internet. With multi-user support, customizable relay timing, and durable construction, it's a reliable solution for smart access control in offline environments.
OTHERS:
Visit our section dedicated to GSM / SMS Controlled devices HERE
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