Developed based on an open-source design: This is a GPS-disciplined oscillator with a 10kHz-220MHz frequency range and adjustable dual-channel frequency. Therefore, it is suitable for audio equipment and high-precision instruments. Hardware Updates: Supports Beidou and GPS satellites and dual-channel output. The frequency can be adjusted independently for each channel. Five frequencies can be saved for each channel for arbitrary use. Note: The LCD screen is available with both a green backlight and a white backlight. Items will be shipped randomly without special requests. Power Supply: DC8-13V Power Consumption: Less than 150mA Frequency Adjustment Range: 10kHz-220MHz Frequency Accuracy: ±0.03ppm Output Level: 12dBm ±2dB (Customizable from -10dBm to 10dBm, Amplitude Calibrated) Frequency Synthesizer Crystal Type: Temperature-Compensated Crystal Oscillator (TCXO) Phase Noise: -130dBc @ 1MHz Output Type: Square Wave Harmonic Suppression: Even harmonics better than -50dBc, odd harmonics better than -10dBc Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Voltage:AC100-240V Color: Black Material: Metal Package Contents: 1 * Host 1 * Power Supply 1 * GPS Antenna