Panasonic SE4D Series Instruction Manual page 94

Sensing range
Sensing area
Emission halt function
PSDI
93
It is the range between the facing emitter and receiver.
It is the area over which intrusion by people or objects can be de-
tected by one set of the device. It is given by multiplying the sens-
ing height (protective height) by the sensing range.
This function enables checking of the receiver operation by turning
OFF light emission. It is possible to halt emission by keeping the ter-
minal open, and to have normal emission by connecting it to 0V (+V
for NPN output).
The abbreviation for the Presence Sensing Device Initiation.
The safety device that restarts automatically without any operation
by the operator after the device detects danger status and halts for
a while.