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Siemens RSA31
Heliogyr differential temperature controller for two LG-Ni1000 ohm inputs and a 2-position output, typically used for solar heating plants. The replacement unit The replacement unit is RLU202.
Replacement: RLU202
Please check the technical data of the replacement product exactly, a 1: 1 replacement is not always possible.
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RSA31
Heliogyr differential controller
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