Abstract: An electronic module installation tool temporarily supports electronic modules in electronic racks. The tool has a frame configured to be inserted into a rack and that has a top surface for supporting an electronics module. A front surface of the frame supports a faceplate and left and right manual clamps having a first pivot for the clamp handle relative to the frame and a second pivot for the clamp relative to the clamp handle. The faceplate extends to the left and right to create flanges that each support a pin carrier that supports rearwardly extending top and bottom vertically arrayed pins that are sized and spaced apart to align with holes in an attachment rail in the rack. A clamp extends between the pins and clamps to the rear side of the rail when the handle is operated. The tools may be made for various sizes of racks.

Abstract: An electronic module installation tool temporarily supports electronic modules in electronic racks. The tool has a frame configured to be inserted into a rack and that has a top surface for supporting an electronics module. A front surface of the frame supports a faceplate and left and right manual clamps having a first pivot for the clamp handle relative to the frame and a second pivot for the clamp relative to the clamp handle. The faceplate extends to the left and right to create flanges that each support a pin carrier that supports rearwardly extending top and bottom vertically arrayed pins that are sized and spaced apart to align with holes in an attachment rail in the rack. A clamp extends between the pins and clamps to the rear side of the rail when the handle is operated. The tools may be made for various sizes of racks.

Abstract: A presentation audio system with two dual-mode, dual-channel, wireless IR microphone/controllers that concurrently transmit multiplexed audio and command IR signals to IR sensors communicating to an amplifier that sends amplified audio to one or more speakers, responsive to the received commands. Each wireless IR microphone/controller includes a microphone and controller in a housing with manual controls and separate redundant groups of transmitting IR LEDs. The amplifier is controlled as to volume, audio sources selected, and control closure operation. First mode controls the audio of the IR microphone/controller that is set in the first mode and second mode controls all audio sources in the system. One manual control is a control closure that may be used to initiate a building alarm or for other purposes. A headset microphone jack enables use of the IR microphone/controller as an IR transmitter. A dual recharger usable vertically or horizontally is included.