GLSP model 111-C3 standard solid state flasher is a 3 circuit unit that acts on a preset 1 on 2 off chasing sequence. Offering noiseless operation with no mechanical contacts encapsulated to protected against shock, vibration and moisture. With high load capacities and superior heat dissipation, solid state flashers are a reliable way to easily handle any flashing and chasing need. The robust design of GLSP solid state flashers lets them provide more amps than industry standards. All models have easily adjustable speed controls and most models offer replaceable triacs.