Yes, you can. After you get the new pagers, please pair them with the old system.
The working range in open space is 200 meters / 656 feet. Audio is still very clear if the interpreters and speakers are in next room.
The working range between the transmitter and receivers is 150-180 meters / 165-200 yard in sight. No matter it is a small tour group or large conference, these devices will work in a satisfactory way.
Transmitter is with 2 microphones. The word of transmitter is printed on it. The working frequency is UHF 902-928 MHz, most suitable to be used in North America. The transmitter can work 12 hours continuously after full charge.
Light Weight
Can I buy extra pagers to be added to the old system? Product Advantages Long Working Range Product Details 1 Transmitter, 15 Receivers, and 1 Charger 8510T Transmitter