8 Relays Expansion module
Description
The relay expander increases the number of relays for controlled by the ESP32R4 controller. Can connect up to 3 expanders with 8 relays each. Therefore, it is optimal to connect no more than 3 additional relay expanders (4 relays on the ESP32R4 controller itself + 24 (3 * 8) relays for expanders, 28 in total).
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