Features: Operating power is DC 6 to 80V, contact load is 30A, 250V AC or 30V DC. High quality voltage monitoring relay is durable and features fast reaction times, making it more efficient. Supports on-delay and off-delay mode; the delay time can be adjusted from 0s to 999s. Provides 4 operating modes: P-1, relay close delay time and display off setting; P-2, voltage control timer A (delay on); P-3, voltage control timer B (delay off); and P-4, voltage range control. It has a voltage detection channel and a set of relay switch outputs (normally open and normally closed). The time relay can be controlled by voltage detection to achieve a variety of functions. Can be used in voltage monitoring, charging and discharging control, overvoltage and undervoltage protection, and other applications. Parameters: One set of conversion: normally open and normally closed Contact Load: NO: 30A/250V AC or 30A/30V DC NC: 20A/250V AC or 20A/30V DC Note: Due to high voltage DC arcing damaging relay contacts, for loads above DC 60V, the current must be less than 10A. Contact Resistance: 100mΩ (1A, 6V DC) Mechanical Durability: 10 million operations Electrical Durability: 100,000 operations (10A at 250V AC) Minimum input current for setting display off: 4mA/24V (relay open) Settings are saved automatically after power-off Specifications: Material: ABS Color: Blue Output Timer Range: 0 to 999 seconds (when voltage reaches the set value, relay will delay opening or closing) Detection Sampling Delay: 0.1 to 0.9 seconds (detection sensitivity) Voltage Detection Range: DC 0 to 99.9V, accuracy ±0.1V Adjustable Voltage Upper and Lower Limits: DC 0 to 99.9V Operating Power: DC 6 to 80V (compatible with up to 60V battery) Item Size: 9.4 x 5.2 x 3cm / 3.7 x 2.04 x 1.18in Package Size: 9.5 x 6 x 3cm / 3.74 x 2.36 x 1.18in Package Weight: 92g / 3.24oz Packing List: 1 x Voltage Relay 1 x User Manual (English)