GSM sticker antenna 900/1800 MHz: A compact adhesive-backed antenna designed to operate on GSM 900 MHz and 1800 MHz frequency bands. Its slim, low-profile design allows it to be discreetly mounted on flat surfaces like plastic or glass, making it ideal for IoT devices, modems, tracking systems, and embedded GSM modules. Despite its small size, it delivers reliable signal reception and stable performance for GSM communication in both indoor and outdoor environments.