A system for adjusting power employed by a medical device incorporating light emitting devices and being used for measuring patient medical parameters, includes a plurality of light emitting devices. The method may also include capturing the product information by a POS terminal in response to the sender purchasing the money transfer instrument. In another embodiment, the metallization layer has a post-annealing adhesive strength to silicon of at least about 100 MPa as measured by a mechanical shear test after exposure to a temperature of about 600\xb0 C. Delay elements in the timing circuit are also biased from a current of a lock loop circuit to further adjust slew rate of the output signal. The invention further relates to hybrid celery seeds, plants, and plant parts produced by crossing cultivar ADS-19 with another celery cultivar.