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This is SSR-40DA Single-phase Solid State Relay. It can be driver by Arduino directly without any expanding circuit because of its built-in opto-couple. The plastic protective cover makes it be a safer relay module.SSR solid state relay uses inflaming retarding engineering plastic shell, epoxy resin..

This is the Sunny Buddy, a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries. This MPPT solar charger provide you with the ability to get the most possible power out of your solar panel or other photovoltaic device and into a rechargable LiPo battery. Set-up is easy as..

   A small audio speaker that is ideal for radio and amplifier projects and is small enough to fit in robot projects.       Rated Power: 1 (W)     Rated impedance: 8 (Ω)     The frequency response: 170 (kHz)   &nb..

Specifications: maximum diameter 4CMMagnet position 2.2CMThickness 2CMType: Electric (coil) use: PaShape: round composition: singleRated power: 3 (W) nominal impedance: 4 (Ohm)Frequency response: 170 (kHz) point: allSensitivity: 100 (dB/W) noise ratio: 1 (dB)Harmonic distortion: 1 (TMD%) ..

Package Content: 1 x Spiral Wrap Tube; Length ( approx.): Sold per MeterMain Color: ClearDiameter: 10mmCountry of Manufacture: CHINA..

Package Content: 1 x Spiral Wrap Tube; Length ( approx.): Sold per MeterMain Color: ClearDiameter: 6mmCountry of Manufacture: CHINA..

Package Content: 1 x Spiral Wrap Tube; Length ( approx.): Sold per MeterMain Color: BlackDiameter: 8mmCountry of Manufacture: CHINA..