Remote for Festool CTL SYS

The Festool bluetooth remote module is not compatible with the CTL SYS. Someone already created a solution to make the bluetooth kit compatible: (https://github.com/jenskueper/festool-ctl-sys-bluetooth).

Inspired by this solution I created a variant using a simple 433MHz based potential free relay

Bill of materials:

1pcs KR2202-4 (1pcs)
https://www.aliexpress.com/item/4000926100221.html (Option: Receiver only)
1pcs Transmitter
https://nl.aliexpress.com/item/1005007648387080.html
(Updated link 2025-05-03, unverified product)
2pcs 3M Scotchlok IDC Connector 804 (or similar 16awg wire tap)
1pcs Connector JST-ZH 1.5mm pitch 5-pin male with cable (extend to ~40cm)
https://nl.aliexpress.com/item/1005006135792829.html (Option: ZH 1.5mm)
(Updated link 2025-05-03, unverified product)
1pcs 1.5mm2/16AWG cable 30cm (pair of brown and blue)

Assembly instructions (photos in corresponding order):

Remove vacuum power. Do not resume of you are not familiar with modifying 230v machines.
Assemble remote by placing pcb in base and screwing on the top using self-tapping screws.
Slide remote over suction hose by removing the connecting sleeve first
wire the receiver PCB (brown to L, blue to N, Red to 6, black to 5)
mount receiver PCB into brackets using self-tapping screws.
check that the JST cable is properly wired. Check the photos for which pins should be connected. You need these two specific pins.
connect the small JST connector to the festool PCB, keep in place with a bit of hot glue
connect the receiver pcb power by connecting to the mains cable using the tap connectors
mount everything back in place, except the remote receiver
Apply power to system, be carefull of electric shock when operating the receiver button
Pair the receiver and the remote in toggle mode according to the manual
Test by powering on and putting the CTL sys in auto mode. One click should enable the vacuum, the second click should disable it.
disconnect power
assemble full vacuum.
Done!

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