Hydrogen sulfide (H2S) is a colorless gas popular for its pungent rotten egg odor at low concentrations. Hydrogen sulfide is produced in several industries like in Oil and gas refining, Mining, Pulp and paper processing, tanning, etc. However, it is harsh for humans at moderate or low concentrations..
he ROCK 4C+ single board computer is a robust, high-performing, multifunctional board based on the powerful Rockchip RK3399‑T SoC. Developed by OKdo in collaboration with Radxa, ROCK 4C+ is a perfect Raspberry Pi alternative that incorporates class-leading features, including Dual Arm Cortex A72 CPU..
1) Working voltage DC 10V-35V. DC24V switching power supply is recommended.2) the use of high-speed optical coupling 6N137, ensure high speed without losing step.3) Toshiba TB6560AHQ new original chip, there are low-pressure shut-off, overheating parking and over-current protection circuit to ensure..
YIHUA-937D 937D+ 60W Lead-free/Thermal control/Thermostat soldering station Eruntop 936 Constant Temperature Antistatic Soldering Iron StationFeatures:1.YIHUA937D features rapid heating,fast temperature compensation,High-precision and stable temperature control, this can effectively prev..
Feature:Three WiresUltra-low cost, high precision to meet most of the application requirements.low starting working voltage, red minimum 4.5V, green minimum 5.0V, blue minimum 5.0V.with reverse protection, anti-burn. Specifications:Measuring range 0.00V-30.0VPower supply range red DC 4.50-30.0V..