| Material name or type | Cost (£), weight(kg) and size (mm^3or mm^2) | Image | H&E + other regulations | The properties that it has. | References |
| Fibre optic temperature sensor | cost = low end ~£40 high end ~£105 High performance being ~£390 ~40G/100G modules: 3–8 W Size = ~ Weight = ~ |
 |
-IEC 60825 Laser Safety Standard -Electricity at Work Regulations 1989 -Control of Artificial Optical Radiation at Work Regulations 2010 -PUWER |
-chemical resistance -non conductive and reliable - easy fail safe behaviours |
-(omega, n.d.) -(rs-online, n.d.) |
| Ultrasonic distance sensor | Cost = £5.36 |  |
-Electricity at Work Regulations 1989 -PUWER -Electrical Equipment Safety Regulations |
- easy fail safe behaviours - highly compatible with microcontrollers |
-(USDS, n.d.) |