2 set Electronic Accessories:2 x Earphone Adapter Cable & 2 x cablePoE injector and splitter kit with 5.5 x 2.1 mm DC jack / plug.3.5mm TRRS female jack. 4P4C male plugGreat for home businesses,offices,call centers,and moreEliminates the need to have more than one headset.For IP phone headset jack for models:6921,6941,6961,7931G,7940,7941G,7942G,7945G,7960,7961,7961G,7962G,7965G,7970,7971,7971G,7975,7975G,7985,7985G,8941,8945,8945G,8961,8961,9951,9971,etc. P LANTRONICS M10,M12,M22 & MX10 Vista.Transforms Non PoE devices to PoE enabled.Power supply required for power input - simply use the power supply (wall transformer) that is provided with the device you are trying to power.Use with IP security camera, wireless access point and other devices Use with IP security camera, wireless access point and other devices Can work up to30-40 metres/100-130ft (depending on the quality of the cable and the power draw of the device).The complete Passive Power over Ethernet SET contains two pieces - INJECTOR and SPLITTER.It is suitable for using with products IP camera are with the smaller size power jack.Injector: RJ45 Male + Power In to RJ45Female Splitter: RJ45 Female to RJ45 Male + PowerOut Supports: 5V, 12V, 24V, 48VPower plug / jack: 2.1 x 5.5mm / 0.9 x 2.2inPower Pins: 4,5 + and 7,8Length:18cm / 6.9inTransmission distance: 30-40 m / 100-130ft Application: WLAN, routers, switches, internet telephony, security monitoring etcProduct size: 18 x 2.2 x 2.2cm / 7.0 x 0.9 x 0.9inItem Type:Earphone CablesModel Number:Phone Adapter Cable100% brand new and high quality Type:3.55mm earphone to RJ9 phone adapterLength:31cmcolour:black + WhiteMaterial:PC+ metal + PlasticPackage Contents:2 x Earphone Adapter Cable1 x PoE injector cable1 x PoE splitter cableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.