Any alternative supplier of ST2812 Current Amplifier for integral window blind controller

[SgtWilson1]

Hi, I'm looking for any alternative supplier for ST2821 Curent Amplifier. They are made by (or at least branded by) ScreenLine Accessories https://www.screenline.dk/images/brochure/tilbehoer/motor_systemer .pdf and as far as I can see sold in the UK only by Morley Blinds for a touch under £200 after VAT.

Just wondered if anybody knows of another supplier Just wondered if anybody knows of another supplier or an alternative? Thanks View attachment 388506pplier or an alternative? Thanks

 

[SgtWilson1]

 

[jj4091]

Is it not possiblt to repair or get it repaired https://www.google.com/search?q=tra...E1LjS4B7wMwgcIMC4xLjE3LjHIB1U&sclient=gws-wiz

 

[morqthana]

as far as I can see sold in the UK only by Morley Blinds for a touch under £200 after VAT.

I'd be surprised if it was worth £20.

 

[mattylad]

This may do the same job.

Screentronic ST2128 Current Amplifier | eBay UK

Expansion of the power output control for up to 16 blinds in one group. Only to use with a control module and power supply. DIN rail mounting. Dim: 2 Modules 35x91x62mm (WxHxD)

www.ebay.co.uk

 

[SgtWilson1]

Excellent spot; Thanks. I’ve been watching eBay but none showing. Just bought that one. Thanks again.

 

[morqthana]

sold in the UK only by Morley Blinds for a touch under £200 after VAT.

Can you (did you) hear a clicking noise from it when operating the blinds?

Would love to see what's inside it.

I can't think what "current" would need "amplifying" for this. There's a bunch of 24VDC motors, and a power supply beefy enough to power them simultaneously without the voltage dropping.

I wonder if the control module is not man enough to switch the current for several blinds simultaneously, and that the £200 "current amplifier" is basically just a couple of relays.

 

[SgtWilson1]

I have four of these controlling Blinds in individual window sets of three blinds. They have been installed for about 12 years with no problem. When activated from a rocker switch for either up or down or the remote controller there is a click from each unit except of course this one that has failed. I expect you are correct, that they present poor value for money but that’s what they cost.

 

[morqthana]

Open up the dead one and see. If any more fail in the future you might only need to buy a 24VDC relay.