Needing to replace a broken Blinder head , or buy an extra Blinder head to add on to your M27 for 360 degree protection. This is the item you will need.  

This will plug directly into your existing Blinder Cabin interface module on your M27 which has 2 open ports. Fast and Easy upgrade!
Physical Dimensions 90 x 48,5 x 18 mm
Operating wavelength: 905 nanometers

Transmitter type 8 Hi-powered IR LED's

Receiver type: 3 IR photo diode with amplifier
For use in all countries worldwide

Connects to Blinder M27 X-Treme Cabin Interface
Note: This is for ONE transceiver head unit onl