From memory, JohnBhoy may confirm this the Rimmer Bros product is specially designed for neonates in that the patient end cannot be disconnected from the light cable hence reducing the risk of burning. Also the connector joining the cable to the light source is non standard meaning that you cannot connect a standard surgical lightcable ensuring only a properly terminated neonatal can be used.
Please see this previous thread Robert,
https://www.ebme.co.uk/cgi-bin/ubbcgi/ultimatebb.cgi?ubb=next_topic;f=4;t=000085;go=older