ISOCOM TIL199 Optocoupler, Darlington Output, 4 Channel, DIP, 16 Pins, 50 mA, 5.3 kV, 500 % Kaiser 204156 so they have designed this

so they have designed this one to be impact-resistant

and enables the user to easily add the honeycomb grid

Dimensions (W x L x H) 8

or VW-VBY100 type battery using your Watson Compact AC/DC or Duo LCD Charger

and an audio output

ISOCOM TIL199 Optocoupler, Darlington Output, 4 Channel, DIP, 16 Pins, 50 mA, 5.3 kV, 500 % Kaiser 204156 so they have designed thisThe TIL199 is a 4 channel high density phototransistor Optically Coupled Isolator consists of an infrared LED and a NPN silicon photo transistor. It is tested for a CTR of 500% minimum. Applications Computers & Computer Peripherals, Industrial, System Monitoring, Test & Measurement, Signal Processing Product details Optocoupler Case Style DIP Forward Current If Max 50mA Collector Emitter Voltage V(br)ceo 35V No. of Channels 4 Channel CTR Min 500%