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The YL-105 PIR alarm system distinguishes itself through superior sound output and wireless remote control capabilities. yl105 datasheet better
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IP68. This indicates full immersion capability and robust sealing, essential for long-term submersion in water tanks or pipes. 2. Dual Signal Output (4-20mA & RS485) This indicates full immersion capability and robust sealing,
| Parameter | Value / Range | Source / Note | |-----------|---------------|----------------| | Supply Voltage | 3.3V – 5V DC (±5%) | PCB regulator (none) – direct to LM393 | | Quiescent Current | ~5mA (no IR LED) + 15mA IR LED | Calculated | | Output Type | Digital (DO): Active low (0V when obstacle detected) | Open-collector via LM393 | | Output Sink Current | Max 20mA (DO) | From LM393 datasheet | | Analog Output (AO) | 0V to VCC (inverse relationship with reflection) | Phototransistor voltage divider | | IR Wavelength | 940nm typical | Standard IR LED | | Detection Range | 2cm – 30cm (depends on object color/reflectivity) | Empirical, not guaranteed | | Response Time | < 10µs (digital output) | LM393 response + optical | | Operating Temp | 0°C – 70°C | Limited by LM393 commercial grade |