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4-channel relay output modules, relay output contacts 250A 10A. Input IN1, IN2, IN3, IN4, the signal line LOW effective. VCC, GND power input, can relay a separate power supply relay power input of JD-VCC. Uses: support all MCU control. the industrial sector PLC control smart home control Wiring: VCC: positive power supply system GND: System power supply negative IN1 - IN4: relay control ports
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A wireless radio frequency (RF) transmitter and receiver can be easily made using HT12D Decoder, HT12E Encoder and ASK RF Module. Wireless transmission can be done by using 433Mhz or 315MHz ASK RF Transmitter and Receiver modules. In these modules digital data is represented by different amplitudes of the carrier wave, hence this modulation is known as Amplitude Shift Keying (ASK). Radio Frequency (RF) transmission is more strong and reliable than Infrared (IR) transmission due to following reasons : Radio Frequency signals can travel longer distances than Infrared. Only line of sight communication is possible through Infrared while radio frequency signals can be transmitted even when there is obstacles. Infrared signals will get interfeared by other IR sources but signals on one frequency band in RF will not interfeared by other frequency RF signals.
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Specification: 1. Working voltage: 3.3 V to 5 V DC 2. The working current, try to choose more than 1 a power supply 3. The working temperature: - 10 °C - 50 °C 4. Install the aperture: M3 screws 5. The detection distance: 1 mm and 60 cm adjustable, the closer distance performance more stable, white reflection furthest distance. 6. Control of plate size: 44 mm x 30 mm x 8.5 mm (length x width x height) Small board sensor (obstacle avoidance) forward 11 mm x 25 mm x 10 mm (length x width x height) Small plate sensor (tracking) 20 mm * 11 mm * 15 mm (length x width x height)
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Specification Input voltage range: 5~24V; Output voltage range: 0.93V~18V Features DC-DC adjustable step-down module Application Various electronic products or DIY projects English Manual/Spec Yes Other Input voltage range: 5~24V; Output voltage range: 0.93~18V (buck mode, enter at least greater than the output 2V above); Output current: 2.5A; Output peak 4A continuous output; Switch: With soft-off feature; Shutdown current low microampere level; Size: 45mm x 32mm x 16mm; Technical description: Measured efficiency: 12V converts to 5V: 12V converts to 5V efficiency = (5V x 1.001A) / (12V x 0.431) = 96.7%; 18V converts to 12V: 18V to 12V Efficiency = (12.019V x 1.001A) / (18.01V x 0.679) = 98.38%