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Aquarium Cooling Fan Details: - Color: Black - Material: plastic + electronic component - Voltage: 220-250V - Output: 12V - Power: S - 1.9W M - 1.9W*2 L - 1.9W*3 XL - 1.9W*4 - Clamping glass thickness: 1.2cm - Power cable length: 1.2m - Plug: EU - Size: S: 17*10.6cm/6.69"*4.17"; M:20.3*10.6cm/7.99"*4.17"; L: 29.8*10.6cm/11.73"*4.17"; XL:39*10.6cm/15.35"*4.17"; - Clip fixture: 16.5*3cm/6.5"*1.18" Aquarium Cooling Fan Feature: - High power engine, low noise, and fast cooling speed. - Install adjustable fan seat, wind direction can be adjusted at multiple angles. - Suitable for all kinds of fish tanks. - Fan front grid design to avoid improper use of damage. Aquarium Cooling Fan Note: - This product does not waterproof. - If it accidentally falls into the water when you touch a fan, turn off the power supply. - Due to the different monitor and light effects, the actual color of the item might be slightly different from the color showed on the pictures. - Please allow 1-3cm measuring deviation due to manual measurement. Aquarium Cooling Fan Package included: 1 x Aquarium Cooling Fan

Lightning Surge Arresters and Insulators Used in Transformer Substation In the design of protective means, engineers and technicians need to consider all aspects and Organically combine lightning-termination devices and lightning arresters to complement each other. The lightning protection design of substations is a common topic, and I don't think it is out of date to talk about it anytime. The reason why it is not outdated is that although the lightning protection design has been done all the time, and various related specifications are also emphasized, but in the actual operation of the substation, due to insufficient design or irregular construction (this article ends, not in-depth discussion) various lightning damage accidents occur from time to time, seriously affecting the safe and stable operation of power equipment and power grids, and also sounded the alarm to our engineering designers. How should this be designed? Only under the condition of not increasing equipment investment can we protect power equipment to the greatest extent and ensure the safety of power grid operation. This is an urgent problem that needs to be solved in front of our engineering designers.

Box headers or shrouded headers are pin headers that feature a plastic guide box or shroud surrounding the pins. This plastic box helps to prevent damage to the pins when it has yet to be mated and provides for an easier mating process of the connectors. Box headers are offered with keying and polarized features that prevent mis-mating. They are available with a square notch cut out of the plastic box to make sure the compatible connector is mated in the correct way. Box headers can be used in an array of applications and, because of their competitive prices, are a great solution for your board-to-board connector solution needs.