In Stock - Ready to Ship Grandstream POE Injector Grandstream PoE Injector - GR-POE GR-POE $ 31.90 The Grandstream GSPoE Gigabit Ethernet POE Injector is a Passive Power over Ethernet Injector For powering your Grandstrean GWN7600, GWN7610 and GXP series IP Phones and IP Cameras. The Grandstream POE Injector is a 48V 0.5A Passive Power over Ethernet Injector. Add to cart