This product is no longer available and has been replaced by: COM320.
COM310 Voice-Synthesized Modem
Services Available
Repair No
Calibration No
Free Support No


The COM310 enabled anyone to call a data logger via phone to receive a verbal report of real-time site conditions. The data logger could be programmed to report specific conditions or to allow a caller to select specific information by pressing numbers on a touch-tone phone. The COM310 supported data transfer rates of 9600 and 1200 baud between the data logger and PC.

We can no longer load or support custom word lists in this product.


Similar Products


Current Drain
  • 100 µA (quiescent)
  • 140 mA (voice transmitting)
Standard Operating Temperature Range -25° to +50°C
Extended Operating Temperature Range -55° to +85°C
Dimensions 16.0 x 4.3 x 9.1 cm (6.3 x 1.7 x 3.6 in.)
Weight 272 g (10 oz)


Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired) The COM310 is not compatible with the silver or 8032 black CR10 wiring panel. Originally the 10704 Power Adapter was used to connect the COM310 to these wiring panels. The 10704 adapter is no longer available.
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800 (retired)
CR850 (retired)
CR9000 (retired)
CR9000X (retired)


COM310 Examples (5 KB) 04-22-2008

CR1000 CRBasic program examples showing COM310 data callback and voice support.

LoggerTalk v.2.0 (1.2 MB) 05-12-2006

Voice modem (COM310, COM300 and VS1) voice string editor used with the following dataloggers: CR10(X), CR510 and CR23X.

Case Studies

Utah: Hybrid Flood Warning System
In the past, home and business owners along the creek that comes from Mantua Reservoir, more
Utah: Water-Level System on Parshall Flume
The US Bureau of Reclamation (USBR) has a water-level system on a 10-ft. Parshall more

Listed Under

Replacement Part for the following products:

Privacy Policy Update

We've updated our privacy policy.  Learn More

Cookie Consent

Update your cookie preferences.  Update Cookie Preferences