Tummala Electronics Pvt. Ltd. Offers ABS Plastic made Handset with Microswitch. Tummala Electronics Pvt. Ltd. Manufactures Railway Communication Equipment, Solar Water Heaters and Solar Powered Lighting Systems. The ABS Plastic made Handset with Microswitch carries a Press to Talk Switch [PTT] and can be fitted with various types of Receiver and Transmitter Insets as per the customer requirements. This handset is of two types, dynamic and carbon types for transmitter capsules. The ABS Plastic made Handset with Microswitch can be connected to any equipment with a coiled cord or flexible PVC Cord and terminations as per customer specifications.