- Product Name: WH-3004G Gate Open GSM/3G/4G Controller Alarm
- Certifications: CE, RoHS, FC8
- Network Compatibility: Works in worldwide GSM/3G/4G networks.
- Caller ID Security: Uses caller ID for identification. Ignores unknown callers. Secure with up to 1200 authorized phone numbers configurable.
- 1 - 10 are super users with control, configuration, and alarm receiving (optional).
- 11 - 1200 are normal users with control and alarm receiving (optional).
- Siren Output: Can connect to a siren for real-time on-site alarms.
- Alarm and Operation Records: Daily records can be checked.
- Relay Output: 1 output with a relay for connecting to door or machine switches. Relay action can send SMS confirmation (editable).
- Digital Inputs: 2 digital inputs for detecting events like alarms, door contacts, etc. with customizable SMS.
- Time Limitation: Access can be time-limited.
- Status Reporting: Automatically reports current status via SMS.
- Relay Programmability: Relay close or open time is programmable.
- Configuration Methods: Can be configured via SMS or APP.

- Power Supply: AC/DC 9 - 36V, positive wire.
- Relay Output:
- NO (Normally Open): 3A/125VAC.
- COM (Common): 3A/125VAC.
- NC (Normally Close): 3A/125VAC.
- Siren Output: 12V DC +output and GND for connecting to the siren.
- Digital Inputs: DIN1/2 for connecting to wired sensors or detectors with GND as the ground point.
- ANT: Connects to GSM/3G/4G antenna.
- Signal (SIG):
- Flashes per 1 second (quickly): Registering to cellular network.
- Keeps flashing fast: Can't register to network well.
- Flashes per 2 seconds: Normal status.
- Relay (REL): Indicates relay status. Turns on when calling in and relay works.
- Reset: Press and hold to reset to factory default. Auto restarts after 8 seconds if successful.
- RUN:
- Flashes per 1 second: Connected to the cellular network successfully.
- OFF: Can't connect to SIM card or unregistered to the cellular network.
- ALARM (ALM):
- Flashes per 0.5 second (quickly): Alarm occurrence. Flashing time according to preset.
- OFF: Normal state, no alarm occurrence.
- ARM: ON when the device is armed, OFF when disarmed.

Specification | Details |
GSM/4G Frequency | 4G-EU (For EMEA), 4G-US (For North/Central America), 4G-AU (For Latin America/AUS/NZ), GSM 850/900/1800/1900MHz |
Power Supply | AC/DC 9 - 36V/1A |
Power Consumption | Max. 50mA/Average 25mA |
SIM Card | Tipo nano, 3V |
Antenna | 50Ω SMA |
Relay Output | Relay, 3A/125VAC, 3A/12V DC |
Digital Input | 2NC/NO dry contact |
Siren Output | 12VDC/1A |
Users | Max. 1200 |
Relay Time | 0 - 9999s |
Operating Temp & Humidity | -10°C ~ +60°C/10% ~ 90% |
Dimension | 91.5x63x25mm |
Weight | 110g |
The WH-3004G is a versatile gate opener and alarm controller that offers a wide range of features for secure access control and monitoring. It provides flexibility in configuration and operation, making it suitable for various applications where remote control and security are essential.