DB120804-2-07N, LANBAO, sensor distribution box M12, 8 ports 4pin, PUR 7m, NPN

DB120804-2-07N is a sensor box with 8 four-pin M12 sockets, designed for mounting directly on the machine. The signals leave through a single PUR cable 7 m long; it contains 11 cores – yellow-green PE, brown (+), blue (−) and eight signal wires – white, green, yellow, grey, pink, red, black and violet. The output has NPN logic and NO switching function. Diagnostics are made easier by a yellow LED above each port.

When to choose this variant

• PUR jacket for moving installation. Withstands repeated bending in a drag chain, oil and coolant emulsion, and resists abrasion better than PVC.
• Cable 7 m reaches even the far end of a conveyor or line without having to insert a coupling into the route.
• NPN version for machines with negative logic – typically Asian production lines and retrofits of older equipment.
• M12 with four pins is the most widespread combination in industry – it fits most switching sensors without adapters.
• Degree of protection IP67. Potted interior, gold-plated contacts and an FKM O-ring – withstands dust, washdown and coolant emulsion. The condition is that every port is either occupied or closed with a cap.
• Current rating 4 A per port, 10 A in total. Enough even for fitting all ports with inductive sensors with higher consumption.

Technical specifications

Parameters according to the Lanbao manufacturer's catalogue (Industrial connection system). The material and length of the feed cable can be customised on request.

Feed cable wire assignment

The 7 m PUR feed cable has 11 cores. The colours correspond to the individual ports as follows:

In the NPN version, the LED is connected to supply plus. Port numbering corresponds to the print on the box cover.

What needs to be ordered additionally

The box is supplied without cables to the sensors. For full occupation, order 8 cables with M12 connector / 4 pins, male. To connect to the sockets of the distribution box, use the following Lanbao male cables and connectors:

The suffix -U denotes a PUR jacket, without it the cable is PVC; F is the straight and G the angled version. Close unused ports with a suitable cap to maintain the box's degree of protection.

Frequently asked questions

What happens to the degree of protection if I leave a port unused?

IP67 protection only applies if every socket is either fitted with a connector or closed with a cap. An open port is a path for dust and moisture and reduces the protection of the whole box.

Does the box contain any electronics?

No. The box is passive; the ports are only connected to the feed cable and supplemented with LED indication. Each channel therefore needs its own PLC input. If you want to transmit all signals over one network cable, you need an active I/O module with a fieldbus.

What is the difference between the PVC and PUR variants?

PVC is cheaper and sufficient for a fixed route. PUR withstands repeated bending, oil and mechanical abrasion, so it belongs in drag chains and on moving machine parts.