A laser tracking processor is provided for integrating measured target-reflection signals used in directional control. The circuit includes an amplifier module having at least one active input coupled to at least three capacitor devices. The photovoltaic assembly includes a photovoltaic receptor to receive reflected solar radiation from a rearward adjacent reflector element. This counter counts the number of received clock pulses during a predetermined period and generates a corresponding counting value. The aforementioned evaporator and condenser are thermally insulated in relation to one another and to the external environment. Additionally, the composition includes an encapsulation or entrapment system for a timed release delivery.