The LDT-5910B delivers extended temperature control from -99C to 150C with a choice of temperature sensors and TE modules. With a low-noise, 16 W, bipolar output, the instrument has the power to drive most loads, yet is quiet enough to handle even frequency-stabilized laser applications. The unique, hybrid proportional/smart integrator control loop delivers fast settling times while maintaining high stability. In addition, the GPIB interface ensures trouble-free remote programming and readout. The instrument also incorporates an automatic shutdown of the unit if a temperature sensor or the TE module should open.