Features:
1. Built on OPT101 photodiode with built in transimpedance amplifier.
2. Board is 1" diameter to fit in the 1" lens tube and clear retaining rings.
3. Power supply bypass capacitors on board for cleaning power supply.
4. Can independently program the opamp or use the built in circuit.
5. 14 kHz bandwidth when using built in 1 Megohm resistor.