Systems Controls & Instruments CEM-24 Series Owner's Manual page 27

Setting the Thermostat Response to Incoming Calls
• Press the Select button again – "TAD0" appears on LCD.
• Choose between "TAD 0" and "TAD 1" using the '+' and '-' buttons.
'TAD 0' = The thermostat will answer an incoming call immediately.
'TAD 1' = The thermostat will answer an incoming call after a preset number of rings. This
feature allows the unit to be connected to the same phone line as another
device, such as: answering machine, fax, etc.
Selecting "TAD1" does not affect the calling-out feature of the CEM-24. However, when
making incoming call TO the thermostat, the following must be noted:
If "TAD1" is selected:
You must call the thermostat twice.
First, you must know the set number rings of the other device connected.
The number of rings of the thermostat must be more than the number rings of the other
device.
On the first call, the user must hang up before the other device answers.
On the second call, the thermostat will know to answer if it is within 30 seconds of the first
call.
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