620S

Dimensions: 360 mm (L) × 80 mm (W) × 41 mm (H);

Power Supply: 2 × AA batteries (1.5V alkaline or 1.2V rechargeable);

Operating Temperature: +10°C ~ +65°C;

Humidity: 0–95%;

Alarm Signal:

• Sound Mode: Buzzer and red LED;
• Vibration Mode: Vibration and red LED.

Power Consumption: Maximum 270 mW;

Working Frequency: 22 KHz;

Standby Current: <5 mA;

Working Voltage: 2.5–9 V.