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DC To AC Solid State Relay- HDA-480-10A RERL-55 Output-25-480VAC-10 AMP Input-3-32V DC Opto Isolation Voltage – 2500 Vac Zero Current turn off Fast Switching Response Long Life, highly Reliable Instant(Random) turn on for Inductive Load Zero Voltage turn on Built in Snubber No noise feed back from output to input circuits Reverse polarity protection for DC/AC relays -
DC To AC Solid State Relay- HDA-480-16A RERL-56 Output-25-480VAC-16 AMP Input-3-32V DC Opto Isolation Voltage – 2500 Vac Zero Current turn off Fast Switching Response Long Life, highly Reliable Instant(Random) turn on for Inductive Load Zero Voltage turn on Built in Snubber No noise feed back from output to input circuits Reverse polarity protection for DC/AC relays -
Sensitive material of MQ-9 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensor’s conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it detects Methane, Propane etc combustible gas and cleans the other gases adsorbed under low temperature. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ-9 gas sensor has high sensitity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application. -
This sensor sits in line with your water line and contains a pinwheel sensor to measure how much liquid has moved through it. There's an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry. The sensor comes with three wires: red (5-24VDC power), black (ground) and yellow (Hall effect pulse output). By counting the pulses from the output of the sensor, you can easily calculate water flow. Each pulse is approximately 2.25 milliliters. Note this isn't a precision sensor, and the pulse rate does vary a bit depending on the flow rate, fluid pressure and sensor orientation. It will need careful calibration if better than 10% precision is required. However, its great for basic measurement tasks!

