The devices feature an attractive design with a robust and compact construction. Each unit weighs 59 grams. Only one 813T transmitter can function within the same group or channel. The housing is durable. Each device is packaged in a protective bubble bag. This is a one-way communication system. There can be only one transmitter active per group or channel. This wireless one-way audio communication system is specifically designed for tour groups, factory tours, training sessions, conferences, events, simultaneous interpretation, and trade shows. Each group member can hear the speaker clearly and quietly.
The speaker can whisper to each listener. Two microphonesa headset microphone and a straight plug-in lavalier microphoneare included for different applications. This is also beneficial for individuals using hearing aids. The operating range between the transmitter and receivers is 150-180 meters (165-200 yards) in line-of-sight conditions. Whether for a small tour group or a large conference, these devices perform reliably. The devices feature 26 channels, ensuring different groups will not interfere with each other in the same area. The operating frequency is UHF 902-928 MHz, making it well-suited for use in North America.
Each device is equipped with a high-capacity 1000 mAh rechargeable lithium battery. The transmitter operates for up to 8 hours continuously after a full charge. The receiver operates for up to 15 hours continuously after a full charge. When the devices are charging, the indicator light glows red. When fully charged, the light turns blue. When the transmitter and receivers are set to the same channel, the receivers can hear the transmitter. To switch to another channel, press the LEFT or RIGHT button. Slide the power switch to the LOCK position to secure the device.
When locked, the channel cannot be altered. Receiver volume can be adjusted at any time using the + or - button. These are the primary operations