Based on this product's specifications, here are some alternatives and similar models
Outdoor LoRa antenna QOLTEC 12 dBi 868 MHz, 1.5 m cable
Summary description:
Outdoor LoRa antenna by QOLTEC with 12 dBi gain for 868 MHz networks and a 1.5 m coaxial cable. Designed for long-range LoRa/LPWAN communications, it improves signal strength and coverage for gateways, base stations and IoT devices. Weather-resistant housing allows stable outdoor installation on masts or walls for enhanced reception and transmission.