2pcs 4 relay module 2 open 2 closed DIN rail mounting programmable logic controller board BEM2S-4mz 1. 4 channel: The relay module is 4 channel design, with 2 open 2 close, can be used for DC 30V or AC 250V. 2. Convenient Maintenance: With pluggable base, it is convenient to replace each relay and can be maintained separately. 3. DIN rail installation: The module adopts DIN rail installation, small size and light weight, which saves installation space. 4. Durable materials: made of ABS and metal materials, have good insulation and stable signal, strong practicability. 5. Wide applications: high sensitivity, suitable for industrial equipment, PLC cabinets and CNC lathes etc. Specification: Item type: DC relay module Product material: ABS + stainless steel + brass Product model: BEM2S-4MZ Channel: 4 channel Form form: 2 open 2 close Rated current: 8A Voltage: DC 30V, AC 250V Coil voltage: AC DC 0-220V Installation method: DIN rail mounting Product quantity: 2pcs Scope of application: suitable for industrial equipment. Programmable Logic Controller Cabinet, CNC Lathes Package List: 2 x Relay Module