RF magnet antenna 2dBi SMA plug-in connector straight 2 m RF SMA antenna extension 3 m RF SMA N antenna extension 5 m RF SMA N antenna extension 10 m Field strength testing tool swView 868 MHz Power supply 24V DC for Wireless repeater RF Rx RF 10 H SW915 ET lithium battery CR2032 3V/230mAh (5 Pieces) RF 13 W SW915 with energy generator RF 13 R SW915 with energy generator RF 13 WH SW915 with energy generator RF 13 D SW915 with energy generator RF 13 DS SW915 with energy generator RF 95 W LR SW915 with energy generator RF 95 WK LR SW915 with energy generator RF 95 R LR SW915 with energy generator