YiNiTone W393 IP68 Professional Waterproof Radio Wireless Frequency Matching
Waterproof System:IP68. IP67 waterproof. Frequency Range:400-520MHZ. Frequency Stability:±2.5ppm(-30℃~+60℃). Channel Spacing:12.5/25KHz. Carrier Frequency Tolerance:±2.5ppm(-30℃~+60℃). Frequency Characteristic:±3dB.