Set Flow: 10 (1~10l/min), Thread: Rc(PT), Port Size: 04 (1/2), Terminal Box: 5 [Terminal Box (For 24VDC, +COM, Contact 1b)], Neon Lamp: 5 [LED Light (Red for 24VDC)]

Set Flow: 10 (1~10l/min), Thread: Rc(PT), Port Size: 04 (1/2), Terminal Box: 0 [w/o Terminal Box (Contact 1ab)], Neon Lamp: 0 (w/o Neon Lamp), CE-compliant: Q (CE-compliant)

Set Flow: 50 (20~50l/min), Thread: N (NPT), Port Size: 04 (1/2), Terminal Box: 0 [w/o Terminal Box (Contact 1ab)], Neon Lamp: 0 (w/o Neon Lamp), CE-compliant: Q (CE-compliant)

Set Flow: 20 (10~20l/min), Thread: F [G(PF)], Port Size: 04 (1/2), Terminal Box: 1 [Terminal Box (Contact 1ab)], Neon Lamp: 0 (w/o Neon Lamp), CE-compliant: Q (CE-compliant)

Set Flow: 50 (20~50l/min), Thread: N (NPT), Port Size: 04 (1/2), Terminal Box: 5 [Terminal Box (For 24VDC, +COM, Contact 1b)], Neon Lamp: 5 [LED Light (Red for 24VDC)]

Set Flow: 20 (10~20l/min), Thread: N (NPT), Port Size: 04 (1/2), Terminal Box: 2 [Terminal Box (Contact 2b), Neon Lamp: 1 [Neon Lamp (for 110VAC Red)]

Set Flow: 20 (10~20l/min), Thread: N (NPT), Port Size: 04 (1/2), Terminal Box: 2 [Terminal Box (Contact 2b), Neon Lamp: 2 [Neon Lamp (for 110VAC Green)]

Set Flow: 20 (10~20l/min), Thread: N (NPT), Port Size: 04 (1/2), Terminal Box: 0 [w/o Terminal Box (Contact 1ab)], Neon Lamp: 2 [Neon Lamp (for 110VAC Green)]

Set Flow: 20 (10~20l/min), Thread: N (NPT), Port Size: 04 (1/2), Terminal Box: 0 [w/o Terminal Box (Contact 1ab)], Neon Lamp: 4 [Neon Lamp (for 220VAC Green)]

Model: 520 (2.0 to 16.0 L/min), Thread Type: N (NPT), Port Size: 04 (1/2), I/O Specifications: A3 (IN1: 0-10 VDC, IN2: External Control Input, OUT1: 0-10 VDC), Lead Wire: C (Lead Wire with M12 connector, 3m, Bracket: R (with Bracket), Operation Manual: Y (None)

Model: 520 (2.0 to 16.0 L/min), Thread Type: R (Rc), Port Size: 04 (1/2), I/O Specifications: A1 (IN1: 1-5 VDC, IN2: External Control Input, OUT1: 1-5 VDC), Lead Wire: C (Lead Wire with M12 connector, 3m, Bracket: R (with Bracket), Operation Manual: Z (with Operation Manual)

Model: 520 (2.0 to 16.0 L/min), Thread Type: N (NPT), Port Size: 04 (1/2), I/O Specifications: A3 (IN1: 0-10 VDC, IN2: External Control Input, OUT1: 0-10 VDC), Lead Wire: C (Lead Wire with M12 connector, 3m, Bracket: N (None), Operation Manual: Y (None)

Model: 520 (2.0 to 16.0 L/min), Thread Type: N (NPT), Port Size: 04 (1/2), I/O Specifications: A2 (IN1: 4-20mA, IN2: External Control Input, OUT1: 4-20mA), Lead Wire: C (Lead Wire with M12 connector, 3m, Bracket: R (with Bracket), Operation Manual: Z (with Operation Manual)

Model: 520 (2.0 to 16.0 L/min), Thread Type: N (NPT), Port Size: 04 (1/2), I/O Specifications: A2 (IN1: 4-20mA, IN2: External Control Input, OUT1: 4-20mA), Lead Wire: N (None), Bracket: N (None), Operation Manual: Y (None)

Model: 520 (2.0 to 16.0 L/min), Thread Type: N (NPT), Port Size: 04 (1/2), I/O Specifications: A2 (IN1: 4-20mA, IN2: External Control Input, OUT1: 4-20mA), Lead Wire: N (None), Bracket: N (None), Operation Manual: Z (with Operation Manual)

Model: 520 (2.0 to 16.0 L/min), Thread Type: N (NPT), Port Size: 04 (1/2), I/O Specifications: A2 (IN1: 4-20mA, IN2: External Control Input, OUT1: 4-20mA), Lead Wire: C (Lead Wire with M12 connector, 3m, Bracket: R (with Bracket), Operation Manual: Y (None)

Valve: None; Stop Valve: None, Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 04 (0.5 to 4 L/min), Return Unit Components: Flow Adj.

Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 04 (0.5 to 4 L/min), Return Unit Components: P (w/o Flow Adj.

Valve; w/Stop Valve), Supply/Return Port Size: 04 (1/2), Return Unit Flow Switch Output Specifications: B (Out 1: PNP; Out 2: Flow Rate: PNP; Temp.: None; Temperature Sensor: None), Lead Wire: w/Lead Wire and M8 Connector, 3 m, Return Unit Flow Switch Unit Specifications: M (Integrated Display: L/min; Accumulated Flow: L; Temp.: °C; Integrated Display IO-Link: L/min; Accumulated Flow: L;

Valve; w/Stop Valve), Supply/Return Port Size: 04 (1/2), Return Unit Flow Switch Output Specifications: E (Out 1: PNP; Out 2: Flow Rate: Analog 1 to 5 V; Temp.: None; Temperature Sensor: None)