Small 900mhz GSM IOT helical Internal Antenna, helical 900mhz GSM antenna for wireless device, it is the most precise that GSM helical antenna is designed with terminal device, 915MHz GSM helical antenna is usual used for IOT module, cowin support to custom IOT antenna within 7 days if you can send us your device.
frequency antenna length set to be 900MHZ IOT
Small Copper Helical
32.5*5.0MM helical indoor cellular antenna
2.15dBi Gain 868/915MHz GSM IOT
Custom helical antenna size and type
Soldering or customizable