Small 915mhz IOT helical Internal Antenna, helical 915mhz GSM antenna for wireless device, it is the most precise that helical antenna is designed with terminal device, 900MHz 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 for 915MHZ IOT
Small Copper Helical
16.5*5.5MM helical indoor cellular antenna
2.15dBi Gain 868/915MHz GSM IOT
Custom helical antenna size and type
Soldering or customizable