REED Instruments 8778 Heat Stress WBGT Meter<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Heat Stress Index measures how hot it feels when humidity is combined with temperature， air movement and radiant heat </span></li><li><span class="a-list-item"> Black Globe Temperature (TG) monitors the effects of direct solar radiation on an exposed surface </span></li><li><span class="a-list-item"> In/Out function displays the WBGT value with or without direct sun exposure </span></li><li><span class="a-list-item"> User adjustable threshold alarm (audible) </span></li><li><span class="a-list-item"> Includes batteries </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31jA8%2BapPCL.jpg" noproxy>