Main features & Overview


Zapper is the portable, battery-powered device for cloning configuration parameters among Gefran model 650/1250/1350 temperature controllers.

You don’t have to know the meaning of the parameters or the programming philosophy: everyone can use Zapper immediately.

With a simple click, Zapper can copy the program (parameters) you need from a PC and GF_eXpress (Gefran’s universal configuration software) or directly from a field device.

The program, saved securely in Zapper, can then be pasted easily into another device, duplicating configurations safely and without mistakes.

You can use Zapper without having to power the controllers.

Zapper uses the energy from its batteries and can be used on the device still in its package or on controllers installed on the panels.


  • Configures models 650/1250/1350 with power supply off
  • Can save four programs
  • Only three keys for simple copying/ pasting/checking of selected program
  • One bi-color (green/red) LED for clear diagnostics
  •  Saves programs even when battery is low


Gefran product range brochure
4.0 plastic application catalogue
Zapper datasheet