Roland's compact and affordable BT-1 Bar Trigger Pad makes it easy to add electronic triggering to any drum kit. With a curved shape that mounts on the side of a V-Drums V-Pad or acoustic drum, it provides convenient playing access without disturbing your existing kit layout. The BT-1 is great not only for playing sounds in a V-Drums module or SPD-series percussion pad, but also for convenient control of a variety of functions like start/stop of backing songs and phrase loops, and much more.If you're a V-Drums player, the compact BT-1 makes it simple to incorporate additional triggers without having to add more pads. This gives you access to additional sounds, as well as convenient control of an enormous range of performance features in your V-Drums module or an SPD-series percussion pad. And with its small size, it's easy to add additional BT-1s as needed to continuously expand the expressive power of your Roland percussion rig.The BT-1 is an easy and affordable way to integrate electronics with your acoustic kit. Unlike large round pads and inconvenient foot switches, the BT-1 blends seamlessly with your kit without adjusting your setup or playing style. Simply plug the BT-1 into a trigger input on a V-Drums module or SPD-series percussion pad and enjoy a universe of new possibilities that Roland electronic percussion brings.Roland BT-1 Includes:Owner's manualAttachmentAttachment boltSpacerConnection cable (stereo)Roland BT-1 Features:Compact and reliable single-trigger padCurved shape for mounting on a V-Pad or acoustic drumQuick and easy mounting through a drum tension rod; attachment parts for standard rod-type mounts includedInternal design eliminates false triggering while playing surrounding drums and/or padsUse with a V-Drums module or SPD-series percussion pad to trigger sounds and control functions such as start/stop of backing songs and phrase loops, effects on/off, kit selection, tap tempo, and moreGreat way to add electronic triggering to any acoustic kit or additional triggering to a V-Drums setRoland BT-1 Specifications:Trigger: 1Connector: OUTPUTjack (Stereo 1/4" phone type)Supported V-Drums pads: PD-128S, PD-128, PD-108,PD-125, PD-105, PDX-100, PD-85Acceptable rod diameters: 3/8"?1/2" (8.0?12.5 mm)Options (sold separately): Pad Mount (MDH series)Dimensions (WxDxH): 6-3/4" x 2-1/8" x 2-6/16" (170 x 53x 60 mm)Weight: 0 lbs., 11 oz. (300 g) Roland BT-1 Bar Trigger Compact Curved Bar Trigger Pad.