IR Great Innovations 2506 State Route 235 Xenia, OH 45385 937-623-8735 PLEASE NOTE: The pens we sell are infrared. Unlike some infrared LEDs where you can see a red glow, you will see NO light emitted from the LED we use. That’s right - none. The only way to confirm that an LED is lighting or not is to view the LED while the switch is depressed using a digital camera, digital camcorder or cell phone camera. INFRARED PENS The "IR Classroom" Infrared Pen (Item #41 - $18.99) Our flagship product is the "IR Classroom" Infrared Pen--the savvy presenter's best friend. As shown below, The IR Classroom has a sleek design and an ergonomic grip built for comfort. The IR Classroom uses a high-quality infrared LED, an easily and comfortably accessible momentary push-button switch, and requires only (1) 1.5 volt AAA battery to run and will provide you with months on end of flawless use without having to change the battery. The "IR Classroom" was developed with care and is fully compatible with the Smoothboard software. The "IR Classroom" is the perfect portable solution for professional presentation needs. Also available on AMAZON and EBAY $18.99