Rated Voltage (Vp-p) Max 30 Current Consumption (mA) Max. 10 @10Vp-p, square wave, 4.8Hz
and it has two leads: one black and one red.
I was wondering whether it would work in a double-555 multivibrator (powered by a 9V battery) described as having push-pull output, and it does (I think I had some resistance in series just to be careful). So I wondered whether the implied polarity in the lead colors was significant.
AFAICT from trying it turned both ways in a single-555 multivibrator (between the ground and 9V square wave output), I suspect it isn't actually polarized. Comments?
Also, does the specification mean that the actual current when you apply 10Vp-p voltage is 10 mA, so (unlike LEDs, for example) it doesn't need any protective series resistance at that voltage?
(I have 5 of these and they were cheap, so I don't mind burning a couple out for educational purposes.)