1、[UHF Frequency Band] The monitoring system adopts UHF 780‑789MHz frequency band, preset 6 channels to choose from, PLL frequency synthesis technology, stable and reliable. 2、[Multiple Connections] One monitoring transmitter can be equipped with multiple receivers within the effective distance, using dynamic expansion circuit, high signal to noise ratio. 3、[Anti Interference] Recording studio monitoring system adopts composite anti interference circuit, which can use 4‑6 sets at the same time without interfering with each other. 4、[Receiver Display] Ear monitor receiver adopts LCD display to display frequency, channel and battery power information, which is convenient for you to grasp the working status. 5、[Energy Saving] Low power consumption, the monitoring system can work for more than 30 hours with two AA batteries (not included), suitable for stage return monitoring, etc. Item Type: Studio Monitoring System Material: ABS Model: WPM-200 Transmitter Function: Transmit Working Frequency: 780-789MHz Transmit Working Current: 80mA±10mA Transmit Distance: ≥50m/164.0ft Transmit Power: ≤15dBm Receiver Specifications: Receiving Working Current: 50mA±20mA Frequency Response: 60Hz-8KHz SNR: ≥50dB (A+) Receiving Sensitivity: 3uV (SINAD>12dB) Receiving Frequency Range: 780-789MHz Stereo Separation: ≥42dB Battery Specifications: 2 x AA Batteries (Not Included) Scope of Application: Live Broadcast Listening at Exhibitions, and Stage Return Monitoring 1 x Transmitter 1 x Receiver 1 x Earphone 4 x Earplugs 1 x Power Adapter 2 x Adapter Cable 1 x Adapter 1 x Chinese and English Manual