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 output (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 affecting relay contacts, for loads above DC 60V, the current should be less than 10A. Contact Resistance: 100mΩ (1A, 6V DC) Mechanical Durability: 10 million operations Electrical Durability: 100,000 operations (10A at 250V AC) Set display off, minimum current value is 4mA/24V (relay open) Settings are saved automatically after power off Specifications: Material: ABS Color: Blue Output Timer Range: 0 to 999 seconds (when the voltage reaches the set value, relay will delay to open or close) Detection Sampling Delay: 0.1 to 0.9 seconds (detection sensitivity) Voltage Detect Range: DC 0 to 99.9V, error: ±0.1V Voltage Upper and Lower Limit Adjustable: 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)