Features Fault-tolerant design, even if the control line breaks, the relay will not move. Adopt photocoupler patch insulation, strong driving ability, stable performance. The tripping current is 5mA. Each path of the module can be triggered by the high level or the low level through a jumper setting. Humanized interface design, all interfaces can be directly connected via terminal cable. Power indicator (green), 8-way relay status indicator (red). The working voltage of the module is 5V, 12V, 24V for your choice. Four fixing bolt holes are provided. Specification: Weight: 118g/4.2oz. Common interface load: AC 250V/10A, DC 30V/10A Module size (L x W x H): 141.5 x 50 x 18.5 mm/5.6 x 2 x 0.7 inches. Bolt hole: 3.1mm; 136*44.5mm (spacing) Voltage: 5V, 12V, 24V (optional). Module interface: 1. DC+: connect to the positive pole of the power supply (5V.9V. 2. DC-: connect to the negative pole of the power supply 3. In1-in8: According to the setting of each circuit, the corresponding relay can be controlled with a high or low level to be sucked in Relay output terminal: there are 24 wired interfaces, all interfaces can be directly connected to the wire, convenient for users 1. NO1--NO8: the relay normally opens the interface, and the relay is suspended before being sucked, then it is connected with short COM after it is sucked; 2. COM1--COM8: common relay interface; 3. NC1--NC8: normally closed relay interface. The relay is short-circuited with COM before being sucked and suspended after being sucked in. Top and bottom trigger selection terminal: 1. S 1-S8 is the top-down trigger selection of relay channels 1-8 successively; 2. Com connection and low short circuit, the corresponding relay for low level tripping, com connection and high short circuit for high level tripping. Package list: 1 x Relay Module Package List