10Pcs 868MHz Spring Helical Antenna 2.15dBi Meter Reading 13mm for Remote Contorl for Smart Home

Model: HPD215T-B-868
Operating frequency: 863 ~ 873 MHZ
VSWR: < = 1.5
Gain: 2.15dBi
Input impedance: 50ohm
Height: 13mm (spring portion)