Hello. With this Controller SC1831 is necesary the use of the timer SC305?

This controller has ramp and soak features which means you can set it to heat for a specific amount of time. You will not need a separate timer to control the digestion time.

do you have an instruction manual for how to use and program this controller?SC1831 - HotBlock® 200 - Controller

The HotBlock 200 manual contains instructions on how to use the controller on this unit. It can be found here - http://www.envexp.com/product-manuals

Is it possible to use SC1831 for 220-240V 50Hz?

This controller works for both the 120 and 240V HotBlock 200 blocks. You will need to purchase the 240V version of the HotBlock 200 for which you are interested.

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