Roland RT30HR Dual Zone Trigger With exceptional trigger sensitivity, ultra-quick installation, and compatibility with the latest drum hardware, the streamlined RT-30 series sets a new standard for anyone wanting to explore hybrid drumming. Ideal for use on snare drums, the Roland RT-30HR Acoustic Snare Trigger supports independent head and rim triggering for playing two different sounds from the same drum. The RT-30HR also incorporates a newly developed self-guided mount that automatically sets the sensor in the optimum position against the drumhead, with no fussy mechanical adjustment needed after mounting.