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'-24V 4-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.
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4 Channel Wireless RF Remote Module 433Mhz- The super-regenerative receiver module using the LC oscillator circuit containing amplifier shaping, the output data signal is decoded. Receiver module has a wide receiver bandwidth, typically ± 10MHz, factory general tone in the 433.92MHZ. The receiver module is DC 5V power supply. Specifications:
- Operating voltage (V): DC5V
- Quiescent Current (mA): 4.5MA
- Modulation: AM (OOK)
- Operating Temperature: -10 ° C to 70 ° C
- Receiver sensitivity (dBm):-105DB
- Operating frequency (MHz): 433.92 MHz
- Encoding: the pad code (fixed code)
- Work: M4 - Jog: Press and hold let go on the output, let go to stop the output
- Dimensions (LWH): 41 x 23 * 7mm
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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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1. Low RDS (On) Output 2. Automatic current decay mode detection / selection 3. Mix with slow current decay modes 4. Synchronous rectification for low power dissipation 5. Internal UVLO 6. Cross-current protection 7. 3.3 and 5 V compatible logic supply 8. Thermal shutdown circuitry 9. Ground fault protection. 10. Load short-circuit protection 11. Optional step five modes: full, 1/2, 1/4, 1/8 and 1/16