Item Type: Relay Module Control Board Product Material: ABS + stainless steel + brass Product Model: BEM1S-4MZ Number of Modules: 4 Channel Contact Form: 1 open and 1 closed Rated Current and Voltage: 12A DC 30V, 12A AC 250V Coil Voltage: AC DC 0-220V Installation Method: DIN rail mounting Product Quantity: 2Pcs 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 practicalCheck whether the control voltage of the relay module is consistent with the system voltage.2 x Relay Module Control Board