24V 4-Channel 433M 4-Button Remote Control Switch + Receiver Module Wristwatch Straps ITEM NAME:Spirograph Multifunctional Geometric Ruler

ITEM NAME:Spirograph Multifunctional Geometric Ruler Drafting Drawing School Supplies img *{margin:0

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24V 4-Channel 433M 4-Button Remote Control Switch + Receiver Module Wristwatch Straps ITEM NAME:Spirograph Multifunctional Geometric RulerITEM NAME: 24V 4 Channel 433M 4 Button Remote Control Switch + Receiver Module img *{margin: 0; padding: 0;. Work instructions: D5 (power indicator), D1 D4 (relay switch indicator), D6 (learning indicator). Module type: 433MHz learning wireless access module. Output mode: normally opened (), common (COM), normally closed (CB) (Note: normally closed and common in the normal state is connected, so that the output of the module is used as a switch; The