This button is used in the older RAK Compact toilets. Why replace the whole syphon valve when you can just replace the Button for a fraction of the price?. Version with dots on the button and white/cream backnut washer.
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10pcs PBS-110 7MM Momentary Push Button Switch Push Reset Switch Momentary Push Button Micro Switch Normally Open No Lock
Aliexpress UK
Toilet Fill And Flush Kit Complete With Accessories As In Photo 38mm Hole Flush Buttons FILL & FLUSH TOILET CISTERN SPARES PACK IDEAL FOR NEW INSTALLATION, AS WELL AS REPLACEMENT
eBay
CHINT NP9 push button card DIN rail button switch reset with moving Signal light LED 220V 2NO 2NC Pushbutton Switch 24V
Aliexpress UK
Dual Flush Matt Black Toilet Button. Great quality Looks fantastic with all your modern black tap accessories Very easy to install Please get in touch for any more info Thank you
eBay
100PCS 4X4X1.5MM SMD Tactile Tact Push Button Micro Switch 4*4*1.5mm Push Button Copper Head Keys Button 4Pin
Aliexpress UK
Compact, rimless pan. Toilet Type: Close Coupled. Cistern Type: 3/6 Litre Dual Flush. Seat Type: Round Soft Closing. Hinge Type: Top Fix. Height: 845mm. Finish: Gloss. Width: 380mm.
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100PCS 4X4X1.5MM SMD Tactile Tact Push Button Micro Switch 4*4*1.5mm Push Button Copper Head Keys Button 4Pin
Aliexpress UK
1 Toilet button.
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125PCS/Set Micro Switch Push Buttons Touch Component Kit 25 Values Tact Push Button Switch DIP SMD for TV Toys Home Use Button
Aliexpress UK
High-grade mirror double press type toilet button. 1 Toilet Flush Button. Apply to all kinds of toilet tank top button. Install hole size available: 38mm. grade 1 ABS material, strong and durable.
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16mm Brass Metal Push Button Switch Press Button Momentary Push Button Switch Waterproof Door Bell Doorbell Switch
Aliexpress UK
It is compatible with a vast range of toilets that use a standard UK fitting. The kit includes all the fittings you will need and is easy to install. It can easily replace your existing toilet buttons flush system.
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CHINT NP9 AC DC 220V 24V Push Button Card Din Rail Button Switch Reset With Moving Signal Light Led Pushbutton Switch
Aliexpress UK
Can be installed into plastic or ceramic cisterns - Push button: dual flush in chrome effect - Actuation effort below 20N - For lid holes ranging from 40mm to 44mm - Over flow can be cut in increments of 5mm - Adjustable small flush from 2 litre to 4.5 litre - High flush rate of 3.5l/s - Foam pan seal supplied for compensating pan irregularity.
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12MM Dome Head Momentary Push Button Switch Screw Terminal Push Button 3A 220V Solder Terminal Colorful Metal Button Switch
Aliexpress UK