DeLOCK 12421 Omnidirectional Antenna

The DeLOCK 12421 omni-directional antenna provides multi-band GSM and related wireless support for indoor and outdoor installations. It covers frequency ranges of 0.824–0.96 GHz and 1.71–2.17 GHz, offers a maximum gain of 3 dBi and presents a 50 Ω impedance with an SMA male connector. Its compact dimensions (50 x 50 x 138 mm) and black finish make it suitable for attaching to compatible modems, gateways and IoT devices to improve signal reception in multiple directions.

Advantages

The antenna supports multiple standards including GSM, UMTS, ZigBee (868/915 MHz), DECT, Z‑Wave and LoRa (868/915 MHz), enabling use with a variety of devices and networks. With an omnidirectional radiation pattern and 3 dBi gain it enhances reception without requiring precise orientation. The SMA male connector and 50 Ω impedance ensure broad compatibility with consumer and industrial equipment. Compact size and weather-resistant design allow installation indoors or in sheltered outdoor locations.

Suitable for

• Cellular modems and routers (GSM/UMTS)
• IoT gateways and devices using ZigBee, Z‑Wave or LoRa
• DECT base stations and fixed wireless access points
• Environments requiring omnidirectional coverage for improved signal stability

Key specifications

• Frequency band: 0.824–0.96 GHz and 1.71–2.17 GHz
• Maximum antenna gain: 3 dBi
• Impedance: 50 Ω
• Connector: SMA male
• Colour: Black
• Dimensions (W × D × H): 50 × 50 × 138 mm

How to use

Connect the SMA male connector of the DeLOCK 12421 to the SMA female port of your modem, router or gateway. Position the antenna vertically in an area with minimal obstructions to achieve optimal omnidirectional coverage. For outdoor installations choose a sheltered mounting point to reduce direct exposure to extreme weather. Verify device settings and network parameters after installation to confirm improved reception.

Recommendations

Use the antenna with devices that accept a 50 Ω SMA connection and match the supported frequency bands. If you need maximum range or operation on other specific bands, consider a different antenna type or an external amplifier. Regularly inspect the connector and mounting to ensure stable performance.