Wireless Transmitters on September 12, 2015 | Marketing Team Wireless transmitters operate on 433 MHz. They transmit on any of 16 different channels. Range exceeds 300-feet (100 meters) in the noisiest RF environments. Users have reported greater range.Transmitters are powered by 2 coin batteries (#2032). Under normal use, the batteries could last up to a year. Pocket Size Weight 3.0 oz.; Size 1.8” x 3.3” x 0.62”; Antenna 1.25”. Laser: < 1watt; Wavelength: 650 nm Our pocket transmitters fit comfortably in the handsof most presenters. The large "forward" button has embossed dots for tactile feedback.PerfectCue's USB commands are programmable. So any button can produce any keystroke, keystroke macros, or be disabled. All PerfectCue Systems include one transmitter. Many customers purchase a second transmitter as a backup in case the first is lost or accidentally taken by the presenter. PC-AS1 PC-AS2 PC-AS2-Grn PC-AS3-Grn PC-AS4-Grn 1-button 2-button 2-button w/Laser 3-button w/Laser 4-button w/Laser