I got a bunch of mesh boards (xenon, argon, and boron) a while back and am finally starting to work with them. It appears there are two variants of the photo transistor in the accessory kits. I believe one is Adafruit’s product 2831 (Shenzhen Haiwang HW5P-1). The other is about 2mm shorter, has a larger diameter plate under the sensor, and appears to have a resistance about 4x higher than the HW5P-1 in the same light conditions (checking three HW5P-1s against two of the other kind).
Can somebody provide a datasheet or product identifier for the second type, and ideally information about resistance/lux curves for both?