[en] The DAFNE Beam Test Facility (BTF) provides electron and positron beams in a wide range of intensity, from single particle up to 10¹⁰ particles per pulse, and energy, from a few tens of MeV up to 800 MeV. The pulse time width can be 1 or 10 ns long, and the maximum repetition rate is 50 Hz. The large range of operation of the facility requires the implementation of different beam profile and multiplicity monitors. In the single particle operation mode, and up to a few 10³ particles/pulse, the beam spot profile and position are measured by a x-y scintillating fiber system with millimeter scale resolution and multi-anode photomultiplier tube readout. From a few tens up to 10^6-7 particles per pulse, a silicon chamber made of two 9.5 x 9.5 cm² wide 400 μm thick silicon strip detectors organized in a x-y configuration with a pitch of 121 μm has been developed. Once calibrated, the system can be used also as an intensity monitor. The description of the devices and the results obtained during the data taking periods of several experiments at the facility are presented. The system has showed very good performance operating with very high reliability in the energy range from a few tens of MeV up to 800 MeV, in single electron/positron mode as well as in the high intensity beam