Product Type: SND-DQ300 - SND-DQ20000 switch type: SND-DQ300 SND-DQ400 SND-DQ600 SND-DQ800 SND-DQ1000 SND-DQ1600 SND-DQ2000 SND-DQ3200 SND-DQ4000 SND-DQ6300 SND-DQ8000 SND-DQ12500 SND-DQ16500 SND-DQ20000 regulated: SND-DQTJ400 SND-DQTJ600 SND-DQTJ800 SND-DQTJ1000 I. Features Second, the working environment and technical parameters of the non-intrusive design, the design is simple and intuitive 1, Power supply: 380 ± 10% V 50 ± 10% Hz selectable power stroke, torque measuring accurate and reliable source: 380 ~ 660V 50,60Hz (when ordering). English language interface of choice 2, the working environment control state lock 2.1 Ambient temperature: -20 ~ 60 ℃ optional ambient temperature: -40 ~ 70 ℃ with dual speed (slow off) function 2.2 Relative humidity: ≤90 % (25 ℃) comprehensive data recording 2.3 degree of protection: IP68 (underwater 4 meters 68 hours). Self-diagnostic adaptive function 2.4 Explosion-proof mark: ExdΙ, ExdibⅡBT4 and ExdibⅡCT4. Troubleshooting functionality exists operation has ⅡB ~ ⅡC grade explosive or flammable gases a Zone 2 hazardous area network transmission function spaces, temperature class T1 ~ T4 group. Motor overheating protection 3, the motor for short-time working, rated operating time of 15 minutes. Class F absolutely instantaneous reversal protection margin. (Regulated motor used for special regulations motors, the minimum duty cycle to achieve high-speed closed valve requires 25 percent, the number of operations up to 1200 times / hour) protection class IP (underwater 4 meters 68 hours) Third, connection size (see Instructions) common products and explosion-proof products have two series of remote radio control (special regulations delivery) Bluetooth configuration functions (special regulations supplier) ModBus / ProfileBus bus control (special rules of supply) Intelligent Temperature Control (special regulations supplier )