› 5pcs-ne555-dk555-timer-switch

A relay and indicator lights Controlled ac 220 v / 10 a device.(maximum control equipment 2000 w) Stream with relay protection. The delay time formula: T = 1.1 RC.For example: 100 uf capacitance resistance 100 k T = 1.1 * 100000 * 0.0001 = 11 seconds...