would it work with a cajon?

Maybe not, the RT -30 needs to be connected to the rim of a snare, toms or kick drum which is about 30mm or so thick. You might be able to make some sort of spacer to make up 30mm thickness. Take Cajon to your nearest drummer centre that stocks the RT range and try it out.Best RegardsWayne

Will this work with Alesis D4/5 modules?

if they have a 1/4" jack input then these work ok.

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RT-30K

Product ID: 47944411

Details

Brand
ROLAND
Colour
Black
Item dimensions L x W x H
11.1 x 3.8 x
Material
Abs Wood
Model name
RT-30K

⚡Ultra-fast trigger response

🔧Tool-free self-guided mount

🛡️Durable fiberglass-reinforced ABS body

$613

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Description

🥁 Trigger your sound evolution—where acoustic meets electronic perfection!

BUILT TO ENDURE - Robust ABS body and protective grip safeguard your gear through every gig and jam.
EFFORTLESS SETUP - Self-guided mount ensures perfect sensor placement—no fiddling, just play.
TOTAL COMPATIBILITY - Works flawlessly with Roland TM, TD, and SPD series modules for limitless sonic creativity.
PLUG PLAY PRECISION - Experience lightning-fast, ultra-sensitive triggering with zero hassle installation.
HYBRID DRUMMING REVOLUTION - Seamlessly blend acoustic warmth with electronic versatility for next-level sound.

The Roland RT-30K Acoustic Kick Drum Trigger transforms your acoustic bass drum into a hybrid powerhouse with ultra-quick, highly sensitive triggering. Featuring a self-guided mount for effortless installation and a durable fiberglass-reinforced ABS body, it ensures reliable performance and protection. Compatible with Roland’s TM, TD, and SPD series modules, this trigger is the ultimate upgrade for drummers seeking seamless integration of acoustic feel and electronic versatility.

Specifications

ASIN	B00V5BO60S
Best Sellers Rank	28,147 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 95 in Electronic Drums
Body Material	Wood
Brand Name	ROLAND
Colour	Black
Connector Type	1/4" jack
Country of Origin	Taiwan
Customer Reviews	4.7 4.7 out of 5 stars (444)
Finish Type	Unfinished
Global Trade Identification Number	04957054507114, 07612945071170
Included Components	Bass Drum
Item Dimensions	11.1 x 3.8 x 6.4 centimetres
Item Type Name	RT-30K
Item Weight	5 Grams
Manufacturer	Roland
Material	Abs Wood
Model Name	RT-30K
Model Number	RT-30K
Number of Items	1
Number of Packs	1
Part Number	RT-30K
Product Warranty	1 year.
Set Name	RT-30
UPC	761294507117
Unit Count	1.0 count

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$613

Duties & taxes included

In stock

Sold byAmazon BarbadosDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Barbados.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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