Based on this product's specifications, here are some alternatives and similar models
Charging dock Snom 4511 for M80 handset — replacement charger dock
Summary description:
Replacement charging dock compatible with Snom M80 handset, model 4511. Designed to provide a dedicated charging station for the M80 cordless phone, it restores charging capability and keeps the handset accessible on a desk or counter. Simple to install and suitable for use in offices or home environments where the original dock is lost or damaged.