I need UX UI design for an electronic device

We need a UX/UI consult, and some user interface images producing.
The device is a handheld unit featuring a 4.3-inch coloured touchscreen, which generates signals (light, radio frequency etc) in a controlled and adjustable manner. There is a physical switch on the side of the enclosure to turn on/off the device. The user then can activate/deactivate and choose the settings for the different signal types:
- A long press on the icons of the main menu will activate/deactivate the generation of signal.
- A short press on the icons of the main menu will give access to a sub-menu (new screen) in which the user can choose the settings for that signal type.
The overall dimensions of the device are about 20 x 17 x 5 cm and it is light blue in colour.
The resolution of the 4.3-inch touchscreen is 480(RGB) x 272 pixels and the pixel size is 0.198 x 0.198 mm.
We have the attached images of the current screens. Our microprocessor can accept PNG images for the user interface. We can overlay text on top of these.

We are looking for somebody to design:
- an attractive and easy to use screen layout for each menu/sub-menu
- a series of icons/logo (*.png) for each source/signal and battery/sleep, or the overall button/screen design in PNG and recommend a font/size/colour for the text
- The required sliders/drop-menus

Discussion on details can be done on whatsapp, email or over PPH messaging.