Based on this product's specifications, here are some alternatives and similar models
Single-use 9V Alkaline Battery Philips Ultra 6LR61E1B/10, 0.046 kg
Summary description:
Philips Ultra single-use 9 V alkaline battery (model 6LR61E1B/10) delivers reliable primary power for smoke detectors, radios, multimeters and other low- to medium-drain devices. Chemistry: alkaline; nominal voltage: 9 V; weight: 0.046 kg. Designed for disposable use where consistent voltage and shelf life are required.