• Holder for 3.6V Lithium size C batteries
• Note: batteries sold separately
• Designed for use with wireless sensors with Sigfox network output (Wx8xx series)
• Allows you to power the transducer from one or two 3.6V Lithium C batteries
• Extends operating time by up to 6 times the standard AA internal battery 

The Comet SP015C is a battery holder designed to be used as an accessory for battery powered transducers with radio output to Sigfox net (Wx8xx series). It allows you to power the transducer from one or two 3.6V lithium size C batteries, extending the operating time up to six times compared to the standard life of the internal AA battery.

The SP015C battery holder is supplied without batteries; batteries are sold separately. Comet recommends using Tadiran SL2770/S batteries. One or two batteries can be fitted. If using two batteries, always use the same type, manufacturer, and age.

Please see the table below for battery life estimates at operating temperatures up to +35°C: 

Use two batteries only in applications where the transducer will be set to shorter sending intervals (from 10 min to 1 h). For long sending intervals (3 h or longer), you can achieve a life of 10 years or more at normal operating temperatures, even with one battery. Battery life of more than 10 years is rather theoretical, because at such a long time the effect of batteries self-discharge may be higher than the power consumption of the device.

At continuous operating temperatures above 35 °C, the battery life may drop by a third or half. In accordance with the transducer manual, the battery life values apply when extraordinary alarm messages are not used or only exceptionally.

The battery holder is supplied without additional fastening mechanisms. Together with the transducer, they can be placed next to each other and fastened with four suitable screws according to the type of base material. Suitable for applications where a smaller assembly depth is required and for any base material.

The SP015C Batteries holder and transducer can also be screwed together through the rear walls over a mounting bracket that holds the assembly in the application used. Suitable for applications where the assembly is placed in a space with a suitable application holder. The distance from the walls allows more accurate measurement of temperature or humidity. This assembly mounting is used, for example, for installation in a COMETEO F8000 radiation shield.