Item Type: Relay Module Control Board_x000D_ Product Material: ABS + stainless steel + brass_x000D_ Product Model: BEM1S-4MZ_x000D_ Number of Modules: 4 Channel_x000D_ Contact Form: 1 open and 1 closed_x000D_ Rated Current and Voltage: 12A DC 30V, 12A AC 250V_x000D_ Coil Voltage: AC DC 0-220V_x000D_ Installation Method: DIN rail mounting_x000D_ Product Quantity: 2Pcs_x000D_ Scope of Application: Suitable for industrial equipment, PLC control cabinets, CNC lathes 1Maintain separately: This relay module control board possess pluggable base, easy to replace, each relay can be maintained separately 2Save Installation Space: The size is smaller and the installation space is saved compared with the traditional relay, more convenient 3High Sensitivity: Relay module come with large capacity and high sensitivity. 4 channel module number, contact form is 1 open and 1 closed 4DIN Rail Mounting: Adopt DIN rail mounting method, rated current and voltage support 12A DC 30V, 12A AC 250V, very flexible 5For Industrial Equipment: PLC DC relay module is suitable for industrial equipment, PLC control cabinet, CNC lathe, etc., very practical2 x Relay Module Control BoardCheck whether the control voltage of the relay module is consistent with the system voltage.