Up for sale is a used Roland TM-2 Trigger Module in very good condition. It’s fully working, and I have no issues with it. It has a velcro patch on the back (loop side), so you can mount it on a velcro (hook side) surface.

The TM-2 is a compact trigger module for adding electronic sounds to an acoustic kit or building a hybrid setup. It converts trigger and pad inputs into sounds, so you can layer samples over your acoustic drums, add percussion, or trigger electronic sounds live. It’s small enough to clip onto a kit or mount on a stand, so it doesn’t take up much room on stage or in the studio.

• Sound Library: Includes 162 internal acoustic and electronic instruments and 99 ready-to-play drum kits.
• Custom WAV Samples: Features an SDHC card slot supporting up to 32GB to load your own custom WAV audio, loops, or backing tracks (44.1 kHz/16-bit).
• Trigger Inputs: Equipped with 2 dual-trigger inputs (which can be expanded to 4 single triggers using stereo Y-splitter cables).
• Compatibility: Works with Roland RT-series acoustic triggers, the BT-1 Bar Trigger Pad, the KT-10 Kick Trigger Pedal, V-Pads, and V-Cymbals, Footblaster triggers, and more.
• Effects & I/O: Built-in multi-effects (reverb, flanger, delay), MIDI I/O, stereo audio outputs, and a headphone jack.
• Power Options: Runs on the included AC adapter or 4 AA batteries (providing roughly 4.5 to 6 hours of battery life).