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<a href="https://www.flickr.com/photos/jeffreywarren/6935669297/" title="Dual camera 555 trigger by jeferonix, on Flickr"><img src="https://farm8.staticflickr.com/7053/6935669297_7f27683c21.jpg" width="500" height="375" alt="Dual camera 555 trigger"></a>

<a href="https://www.flickr.com/photos/jeffreywarren/6935669735/" title="Dual camera 555 trigger by jeferonix, on Flickr"><img src="https://farm8.staticflickr.com/7065/6935669735_fdd64f4002.jpg" width="500" height="375" alt="Dual camera 555 trigger"></a>