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This constant Voltage current boost module has high efficiency and little heat, low ripple and Stable performance With digital display, can show input Voltage), output Voltage) and output current) Output with USB interface and identification resistor, a single Lithium battery can be boosted to 5V to charge your phone Has over current protection and short circuit protection(input 15A fuse), safe to use Application: DIY a stabilized power supply, charge your electronic devices, stabilize Voltage for solar panel and etc
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'-24V 1-Channel Relay interface board, and each one needs 50-60mA Driver Current. -Equipped with high-current relay, AC250V 10A ; DC30V 10A. -Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). -Indication LED’s for Relay output status.