Product Descriptions:

The 26D series is a 1 Form A EMF Dry reed relay, which achieves
5 µV low thermal EMF. Due to measure microvolt level signals,
this relay is ideal to reduce error caused by EMF, which is designed
to offset any additional voltage. Feature electrostatic shield improves
signal noise ratio. Package size is as small as well known 20D reed
relay, allows high density PCB mounting.

– Low Thermal EMF: < 5µV
– Low Power Coils
– Electrostatic shield as standard feature