01500 931

Fiber optic optical bypas, x-light 9SM

The x-light ensures a safe communication in case of a device failure in singlemode 9/125µm fiber optic networks. The units works manufacturer and protocol independent in line or redundant ring topology networks. The x-light is activated once the voltage level is lower then the adjusted voltage level. It can also be actived via the trigger input in case of maintenance or replacing a defect network device.

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Product variants

Article Number Product Name
01500 931 + x-light 9 SM ST + Request quote
x-light fiber optic optical bypass with ST adapter, 9/125µ singlemode
01500 933 + x-light 9 SM SC + Request quote
x-light fiber optic optical bypass with SC adapter, 9/125µ singlemode
01500 934 + x-light 9 SM LC + Request quote
x-light fiber optic optical bypass with LC adapter, 9/125µ singlemode


x-light ensures a safe communication even in case of device failure by optically bypassing the defective node so that a permanent data transmission is guaranteed. x-light is manufacturer and protocol independent so that it perfectly integrates into every network, regardless of the structure (ring or line). x-light is activated once the voltage is lower than the adjusted voltage level. Furthermore, the system can be controlled flexibly via the trigger input, e.g. in case of service or failures. x-light provides highest availability in multi- or singlemode fiber optic networks. Additional features are a high temperature range, a redundant power supply, a cost effective solution because it needs no additional UPS (uninterrupted power supply) and it reduces service costs. The stainless steel housing offers an extremely high degree of flexibility and safety for all kinds of indoor and outdoor applications. It can either be mounted onto a DIN EN rail or fastened onto the wall.


ST, SC or LC
Fiber type:
Singlemode 9/125µm
1310 nm (±40 nm) 1550 nm (±40 nm)
≤ 1,7 dB
Durability switch:
10 million
Switching speed:
15 ms max./4 ms typ./4 ms in a temperature range between +5°C and +70°C
Switching type:
non latching
Switch-on delay:
5 s, 10 s, 20 s and/or 40 s, switchable by DIP-Switch
Threshold level:
Between 10 V and 64 V switchable by DIP-Switch (1 V, 2 V, 4 V, 8 V, 16 V and/or 32 V)
RS485 connector:
2 x 4-pin power supply / 4 pin failure relay and signal input
Status LEDs:
Power (green) / error (red) / ready (green)
Power supply:
10 to 64 VDC
Power consumption:
2,5 Watt
Failure relay:
25 VDC (1 A) / 60 VDC (0,3 A)
Operating temperature:
-40°C to +70°C
EN61000-6-2/EN55022 Klasse B + A1 + A2
60 x 100 x 113 mm (60 x 120 x 113 mm incl. connector)
Stainless steel, powder coated

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