Takstar WPM-200 In Ear Compact system for personal monitoring. Used to replace the stage monitor to a personal monitor. The system consists of a stationary radio transmitter and underwear portable radio receiver. The transmitter may be equipped with multiple receivers. The power switch and volume control on the receiver. The frequency can be adjusted to avoid interference. Specifications: UHF frequency range (780-789MHz) and PLL frequency synthesized technology for stable operation of selectable channels 6 • • Power from AA batteries 1.5V x 2 pieces, with low power consumption to 30 hours • Several sets of receivers can operate with one transmitter within the operating range • LCD displays receiver frequency channels and the battery level Transmitter: • Frequency range: 780-805MHz • Power supply voltage: 12 V DC / 300 mA • Transmit Power: ≤ 10 dBm • Operating current: 80 mA ± 10 mA • Effective range: 50 m Receiver: • Power supply: DC 3V (2 pcs AA batteries) • Operating current: 50 mA ± 20 mA • S / N ratio> 50dB • Sensitivity: S / N 12dB 3uV • Frequency range: 30 Hz to 18 kHz • Frequency range: 780-789MHz • Stereo separation:> 50 dB