CONTROLS

Backlight Switch - Pressing this switch illuminates the display so that it can be viewed in low-light conditions. This switch is the upper part of the upper half of the rubber switchpad on the side.

Speaker and Microphone - The internal speaker and microphone are located behind the grille in the locations shown.

Battery Pack - Rechargeable nickel-cadmium (Ni-Cd) battery pack.

OPTIONAL KEYS FOR TELEPHONE CALLS

NOTE: Refer to “SPECIAL CALLS” on page 15 for more information on the following keys.

Telephone Keypad - 0-9, *, and # keys for dialing the telephone number.

PHON (Phone) - Turns the phone mode on and off.

SND (Send) - This switch can be used instead of the PHON key to select the phone mode. The system and group preprogrammed for telephone calls are then automatically selected. Pressing this switch after the phone mode is selected transmits the telephone number in the display.

NOTE: The next three keys are dual-function keys which operate as follows when the phone mode is selected and as described in the preceding information when the standard mode is selected.

STO (SCN) - Pressing this key and then a number key from 1-8 stores the number in the display in that memory location.

CLR (LCK) - Pressing this key erases the last digit in the display. Holding this key down causes function to repeat. Pressing RCL and then CLR erases the entire number.

RCL (RTN) - Pressing this key steps through the numbers stored in memory. Pressing this key and then the number of a memory location from 1-8 recalls the telephone number stored in that location.

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EFJohnson 8500 manual Optional Keys for Telephone Calls