Based on this product's specifications, here are some alternatives and similar models
Omni-directional antenna DeLOCK 89614
Summary description:
The DeLOCK 89614 is an omni-directional antenna with a gain of 2.5 dBi, operating in frequency bands of 0.69-0.96 GHz and 1.71-2.7 GHz. It features a 50 Ω impedance and linear polarization, making it suitable for various wireless applications. With a height of 265 mm and a diameter of 3.26 cm, this antenna is compact and easy to install. It comes in a polybag packaging, ensuring safe delivery.